This was the first class of the fall term and the lesson seemed somewhat appropriate.

Greetings:

• Native Speaker introduces the concept of different levels of greetings. 5 minutes.
• Native Speaker goes over the different levels of formality with Korean greetings. 5 minutes.
• Native Speaker introduces the formality spectrum and solicits students to place people on the spectrum. 10 minutes.
• Native Speaker introduces North American greetings that match the Korean greetings. 20 minutes.
• Students perform North American greetings vocabulary worksheet. 10 minutes.

Notes:

• The worksheet took the form of a word search and most students took longer than 10 minutes.
• Presenting the greeting as videos worked well for most of the classes, especially when we got to the end and used Mr. Bean greeting the Queen as the very formal greeting.
• This class can be as interactive as you want it to be.  On one hand you can have the North American greetings presented as skits by the students or the other you can use videos.
• I presented with videos, but my choice was a product of doing this at the last minute, the night before class; more effort could have delivered better, more presentable examples.

My PowerPoint has embedded videos that need to be in a the same directory as the power point file. If that doesn't work they can be found online:

• Telephone Greeting
• Informal Greeting
• Polite Greeting
• Formal Greeting
• Very Formal Greeting
• Eagle Greeting

The wordsearch was generator by one of the vast collection of word search generator.

Other points of this lesson:

• Teaching the concept Wazzzup and Bootyshake.
• Introducing the kids to the wonderful world of Scrubs.
• Seeing the effects first hand of playing Mr. Bean videos.  The Korean kids love 'em; they are video gold.

More information about my lessons can be found here.

really dug the videos, will def. incorporate into next greetings lesson!

I want to try your lesson plan in my class. My students will have fun.

Thanks for the great idea, lesson worked well.

I used this lesson in my high school first grade classroom with a few tweaks here and there. One tweak was that at the end of the lesson where the slides show the greeting and whether it is formal, informal, etc I turned this into a Typhoon game.

Typhoon Game:
-create an 8x8 grid in word and assign a B, T, or # to each square
-Draw an 8x8 grid on the board
split class into teams, 5 or 6 teams works well
-if group guesses the correct type of greeting (informal, formal, very formal) then they get to choose a square
-if the square is:
>a number: the group gets that many points
>a T (Typhoon): that group loses all their points
>a B (Bomb): group gets to choose another team to lose all their points
   
thanks again,

Interesting idea, I think I may use a condensed version of this. Though, I think I'll leave out "wuzzzup". I always think of the budweiser commercial. A cultural idiom I'd rather not pass along :)

Has anyone used their Intro PPT's to also go over introductions or do you keep them separate lessons? 

http://www.youtube.com/watch?v=g6J4Iij5-uk&list=PLAB699B20831296C1&index=43&feature=plpp_video

There have been some good ideas about greetings lessons on this thread and I thought I'd share this link.  It could be a little inappropriate for some classes... It's not exactly P.C.  but your kid's might get a few laughs out of it. I Really wouldn't wouldn't recommend this for anybody teaching lower than the high school level.  It could also be a good guide for some acting to ham it up with in class if you don't want to use the actual video. 

Also here is my lesson for my 1st grade high schoolers.

I usually start this lesson by eliciting from the students things that make them happy or sad and then so so for the middle.  After this attempt at engaging them I go through and explain that since many of them have practiced the "I'm fine thank you, and you," line so much that it sounds a little stiff.  (I do a b.a. robot impression.) I then pretend like I get angry every time I hear that.  (There is a lot of over the top acting in this lesson but if you keep walking up to students asking,  "How are you?" and acting like your head is going to pop every time they respond with, "Fine thank you and you," eventually they all start to pay attention.)  Then I go on to explain that there are truly a few standard responses and how to tell if someone is inviting you into a conversation with something like saying, "I'm great!" 
I only see my students one time a week so I try to make a point of  how these responses are what we should say when we see each other in the halls if we don't have time to talk.  There is a brief handout tacked to the end of the .ppt that they can fill it out as you go through some of the "common" responses. 
This is definitely a lesson that can turn ugly quick.  It is all about being over the top but trying to not be insulting to what the kid's have been using as a rote response to the question, "How are you?  There's a little more to the lesson in the .ppt if you happen to get through it quick. I had intended when I created this last semester to show how these new responses can be used for similar questions and there are a couple vocabulary word "throw outs," because I have mixed level classes.  (Note the quotes in the handout.) 
the creator of the this reply takes no responsiblity for any consequences that arise from attempting to use these lesson ideas.  

I had some questions about the OP:

1) Bootyshake???
2) The slides with 4 bullets - are those supposed to be multiple choice answers?
3) When I downloaded the word search, it looked like there were some letters missing. Does it look like to anyone else? Does everything show up when you print it?

I'm teaching 2 really low level students after school formal and informal greetings (along with stuff to specifically prepare them for an internship).