That's a very unique top 5 you have there. Nice.

1. Metroid Prime Trilogy
2. Pro Evolution Soccer
3. Trauma Center
4. Wii Sports
5. Zack & Wiki

Here are my top 5 games - from my collection. These 5 games alone would make the Wii a worth while purchase.

1- Fire Emblem Radiant Dawn
2- Little King Story
3- Tiger Woods -07
4- Military Madness - Nectaris
5- Super Paper Mario

You've got to ungrade to TW 10 (or 11) with WM+ - it makes putting perfectly natural and not the fidgitty think it is in '07.   Sometimes I play '10 just for the mini-golf parts PLUS you get Frisbee golf too which is an excellent addition.  Online, and so much more.   

I'm on 1200 hours, that game never gets boring.

1. No More Heroes (I just made the 5th Rank. So I'm like halfway there)
2. Wii Sports (Wii bowling is my favorite)

I got my Wii like less than 2 weeks ago so I can't really name 5 yet. lol. Wii sports is pretty fun but I expect it to fall way down my list eventually. I am loving No More Heroes. I expect it to stay pretty high on my ranking list.

I'll list my top 5 Wii wishlist

1. Tatsunoko vs. Capcom (after I get CC Pro next week)
2. No More Heroes 2 (need to finish NMH 1 first)
3. Muramasa
4. Madworld
5. Monster Hunter Tri (out in 11 days)

1. Super Mario Galaxy
2. The Legend of Zelda: Twilight Princess
3. New Super Mario Bros. Wii
4. Okami
5. Super Smash Bros. Brawl

Dang, a top 5 is tough. x_X (Sorry Metroid! And Fire Emblem! And Silent Hill! And...)

Oh yea

1. Super Mario Galaxy
2. Resident Evil 4
3. Rune Factory Frontier
4. Little King's Story
5. Metroid Prime 3

The Legend of Zelda: Twilight Princess
Super Mario Galaxy
Okami
Muramasa: The Demon Blade
Little King's Story

5. Wii Sports Resort
4. Zack & Wiki
3. Little King's Story
2. Trauma Center: New Blood
1. Super Mario Galaxy

Honorable mentions to house favourites: We Cheer and Big Brain Academy