This doesn't seem to include all the data, as some get stacked in at "other".
But heres mine:
1.Internet Channel - 934Hr. 39Mn. 545 times.
2.SSBB - 180Hrs.19Mn. 88 times
3.Mario Kart Wii - 113Hr. 4Mn. 77 Times
4.LoZ:TP - 85Hr. 49Mn. 49 times
5.Wii Sports - 76 Hrs. 53Mn. 68times
6.Mario Strikers Charged. - 75Hr. 49Mn. 120 times
7.Fire Emblem: Radiant Dawn - 59Hrs. 25Mn 18 times
8.CoD:WaW - 51Hrs.1Mn 31 times
9.Wii Play - 44Hrs. 7Mn. 56 times
10.Super Mario Galaxy - 43Hrs. 0.Mn 31 times

Edit:It seems I have forgotten to add my VC and/or WiiWare games.

I have SMB(NES) at 120 hours

And Super Mario World at 75 hours.

I'll need to check again later if I forgotten somthing else, so far this is it.

My top five:

Mario Kart Wii: 1796hrs. 14min. 186 times - 19750 online races! (Now you know why my 360 score is pathetically low)
Wii Sports: 352hrs. 25min. 47 times
Super Mario Galaxy: 328hrs. 14min 18 times
Metroid Prime 3: 243hrs. 56min. 39 times
Super Mario 64: 190hrs. 50min. 25 times

I'm a marathon gamer

Metroid Prime 3 388hrs 3mins - 23 times.

Metroid Prime Trilogy 217hrs 2mins - 34 times.

Twilight Princess - 102hrs 12min 49 times.

Tales of Symphonia: Dawn of the New World 102hrs 2mins 12 times.

Super Smash Bros Brawl 90hrs 20mins 108times.

Call of Duty World At War(mostly my brothers playing it) 80hrs 5mins 123 times.

Super Mario Galaxy 76hrs 32mins 24 times.

Wii Sports 73hrs 4mins 106 times.

The Legend of Zelda Majora's Mask 68hrs 48mins 53 times.

World of Goo 55 hrs 47mins 22 times.

The Conduit 53 hrs 37mins 30 times.

Phantom Brave 51hrs 42 mins 23 times.

Super Metroid(I prefer to play it on my snes due to nostalgia, I easily clocked 1000s in this game) 48hrs on the dot 6 times.

The Legend of Zelda Ocarina of Time 46 hrs 19 mins 25 times

Metroid 46hrs 15mins 27 times.

Rune Factory Frontier 45 hrs 56mins 15times

Final Fantasy Crystal Chronicles: My Life as a King 43hrs 38 mins 49 times.

Mario Kart Wii 43hrs 33mins 53 times.

Monster Hunter Tri 41 hrs 15 mins 34 times

Super Paper Mario 40hrs 51mins 20 times.

That is my top 20. I have abou 50 games that are listed on the channel including Wii games, Wiiware games, and Virtual Console games. I also have games that aren't listed for whatever reason. An example of one of these is okami , and Pikmin.

That's cools.  I was thinking about using it more often myself because the Wii uses a lot less energy than my laptop, I know that whole thinking green thing.  Unfortunately, the Wii is in the living room and so using it more often may be difficult.  My laptop is on my desk in my room.  I might have to move the Wii to the the bedroom.

^
I also have a very good computer, but I find it mroe comfortable to use it at my Wii, but it still also use my PC alot, maybe even more then my Wii.

You're not the only one. You're just one of two, lol. Besides the internet channel my most played game is:

Guitar Hero 3 - 205 hrs. 35 min.

After that, the play times drop significantly. I don't have the specifics, but it was something like:

Wii Sports - 90 something hours

Mario Kart - 90 something hours

Guitar Hero World Tour - 80 something hours

Dr. Mario - 70 something hours

I'm in the minority when it come to Brawl play time. That game ranks about 8th on my list. I obviously was addicted to Guitar hero 3. The sad part is, I gave that game away to my friend for over three months. Beatles Rockband is already at 12 hours. I need to stop with these games.

not exact but I think the top 5 were something like

Zelda Twilight Princess 130 hours (I think I left the game on quite a bit without playing it)
Tales of Symponia 2 85 hours
Super Paper Mario 80 hours (again I think I left the game on a lot without playing it)
Mario Galaxy 45 hours
Mario Kart 35 hours