AVR-Chat

all right I couldn't make myself clear enough.
What I specifically want to know is about the interfacing of common 
display devices like :
1.LCD Display,
2.television Screen.
If I develop some primitive game playing application(say checkers or 
any such thing) LED's won't be that effective.what options do I have 
then.
Kindly give details abt input options also,again apart from keyboard 
which i currently use. 
(I'm working on Mega-8 kit).
Thanks.