I'm hooked on Zelda right now and loving every minute of it. I've only had a couple of hours to play it so far and am only just past the Forest Temple and am about to go back into the Twilight Realm. I really enjoy the visual glow/oversaturation effect they employ in the Twilight World. Good stuff and great handling!
Wii Sports is great, Bowling and Tennis for fun but I've been enjoying Boxing as well. My friend Ben and I have tourneys on it and it can get to be quite the workout when you've been playing for 1/2 an hour. ;)
Wii Play is also incredibly cool. The duck-hunt styled retro "Shooting Range" game is fun, playing pool is fun and Laser Hockey is really cool as well. Also the "Find Mii" game is a good brain game/pattern recognition. :)
SSX I played a couple of times but wasn't able to get into it fully yet. I think I just need to be able to get a solid hour of play-time in before I'll be able to get into the groove of it. Raving Rabbids is of course the new digital crack but I am eagerly awaiting Mario Party and I want to try out the Spider-Man 3 movie game. I'd really like to see how the NY city-swinging controls go as I'm a big fan of the SM2 movie game as well so maybe that's why. ;)
What I'm REALLY waiting for more than anything else are Super Smash Bros. Brawl, Metroid Prime 3 and Super Mario Galaxy. :)