Yeah, there's a dirty great long document full of inane rambling about pretty much just hyperlinks written by some fool over on the same sticky thread Daejeon just pointed out. It describes where things are in Korean PPT using a combination of images and hairy fairy descriptions of what the icons look like.
My favourite features are not using too many features. Seriously. Make the slides consistent in structure but surprising in content, have the total progression very clear (so the students have some promise the slideshow is not endless) and use basic complimentary colour principles. Do not use the default PPT colour schemes. Finally, jazz them up with characters relevant to your student's interests where you can. But remember, the slideshow is a tool. The one teaching your students is not it but you. Even the crummiest slideshow can be made interesting (provided it is not cluttered and visually noisy) if you present it in an engaging manner. Ask questions, get the students to guess what's next, incorporate small puzzles (Doing vocab? Add in missing blanks problems!) etc.
Biggest technical tip: Don't drag and drop images direct from a web browser into Powerpoint. Yes, it works, but it also drags a dirty great big hyperlink with it, and if you nabbed that image off Google, then you have no idea where it came from, nor whether it is Safe For WorkTM.
