I'm going to disagree with 'games are far and few between' when honestly, a console only requires a few 'hit' games to make you spend all of your time using it, e.g. ncaa football series, gta series, etc.
With nintendo, you are assured to get top notch nintendo brand games-
Wii Sports
Zelda!!!!!!!!
Wii play
Tiger Woods golf
SSX blur (snow boarding)
Super paper mario
warioware (haven't played)
excite truck (haven't played)
mario strikers charged!!!!
These are all pretty much "must haves" for the console.
mario party 8 is pretty slick, but it's like playing monopoly with minigames.
Don't forget about a new Metroid coming out soon as well.
personally I could live without wiiplay--it's kinda lame, but it's great for parties and company, especially your 'slow' crowd, like parents and what not...they could really get into playing air hockey or table tennis. The only mildly humorous game on wiiplay is the cow racing. The rip off of "tank wars" from atari is probably the best game on there and the only one that requires a nunchuck.
I haven't bought any classic games, but there is no way I'd by tecmo bowl, it's tecmo super bowl or the hi-way, please.