Wii Sports is great fun!
Also got Wii Play with the second Wiimote, it's alright (Laser Hockey rocks! As does the tank minigame). About half of the games are a bit too simple, IMO. Still, worth the extra money on top of the controller
And I got myself Zelda too, of course
Not too far in yet...
Edit:
Downloaded Gunstar Heroes today (800 points), well worth the price! Played through it with a friend on co-op - not a bad alternative to renting a movie