I was the same way about excite truck, i never got to buy it til a few months ago, and im loving it! I bought Medal of Honor Heroes 2 like a year after it came out and i never looked back. Im thinking of getting Dead Space Extraction; its an on rails game, but a good one.
I still havent got both Call od Duty games or the metroid prime trilogy; mainly because im saving up for a new tv. Check the ones I listed, they're pretty cool.

You are spot on about RTS games being at home on the Wii. This is why I hate EA. They'd rather shoehorn a control scheme for Dual Analog controllers and touch screens for the Iphone rather than take a chance on the Wii.

On topic:

Sword and Soldiers on Wii ware it's a rts game

Punch Out ( Wii) --Arcade Boxing

Rogue Trooper: The Quartz Zone Massacre--- A third person shooter (it's a port from the Xbox/PS2).

I throw in some point&click adventure games, as this is usually the most overlooked genre on every system:

Broken Sword: Shadows of the Templars - Director's Cut
Secret Files: Tunguska
Sam & Max: Season One
Another Code R: A Journey into Lost Memories
Tales of Monkey Island Chapters 1-5 (WiiWare)
Strong Bad's Cool Game For Attractive People Episodes 1-5 (WiiWare)
Secret Files 2: Puritas Cordis (PAL only atm)
Runaway: The Dream of the Turtle (PAL GER only atm)

I loved zak and Wiki - I really feel strongly about that game and everytime a mate / work colleague gets a wii I lend them that game and badger them until they've played it.  So far only one has said they didn't enjoy it.

I really think Nintendo should bundle this game with the Wii cos some levels would keep entire families thinking for hours.  Best Wii game for me so far I reckon.

Gor Broken Sword, Secret Files, Strong Bad but not the other ones - I bet I could get them cheap nowadays.