They have themes for Guitar Hero, Mega Man & everyone's favorite plumber. You can see the rest of the themes that are available here.
I had to go with the Street Fighter IV, myself.

What's your iGoogle theme?
Baby, ev'rything is all right, uptight, out of sight.
Baby, ev'rything is all right, uptight, out of sight.
I'm a poorman's son, from across the railroad tracks,
The only shirt i own is hangin' on my back,
But i'm the envy of ev'ry single guy
Since i'm the apple of my girl's eye.
When we go out stepping on the town for a while
My money's low and my suit's out of style,
But it's all right if my clothes aren't new
Out of sight because my heart is true.
She says baby ev'rything is alright, uptight, out of sight.
Baby, ev'rything is alright, uptight, clean out of sight.
I'm a pearl of a girl, i guess that's what you might say,
I guess her folks brought her up that way,
The right side of the tracks, she was born and raised
In a great big old house, full of butlers and maids.
No one is better than i, i know i'm just an average guy,
No football hero or smooth don juan,
Got empty pockets, you see i'm a poorman's son.
She says give her the things that money can buy
But i'll never, never make my baby cry,
And it's all right, what i can't do,
Out of sight because my heart is true,
She says baby ev'rything is alright, uptight, clean out of sight.
Baby, ev'rything is alright, uptight, clean out of sight.
Baby, ev'rything is alright, uptight, ah ah ah ah,
Baby, ev'rything is alright, uptight, clean out of sight.
Baby, ev'rything is alright, uptight, clean out of sight.
“I was hired to document the tearing down of the high rises. At the same time I interviewed some of the residents who lived in the high rises and they weren’t happy at all because of the spectacle that was before them. They were really angry. It was their home, it was where they used to live, some for 30 years or more. Even though in many ways it wasn’t the best place to live it was all they had and to see strangers having fun by shooting paintballs at the block left them furious.”
And so began a journey of investigation in which previous silent rage was given space to talk.The film first debuted in the US last Autumn, and the response has astounded the director: “The reception here has been really incredible. It’s the most talked about thing in the city right now. There’s been loads of coverage in the papers and everybody around town is talking about it. All the screenings have sold out. The people at the screenings are really passionate – they’re always asking what they can do to get involved.” - Chris Ivey
Jon Stewart across the belly/Jim Cramer lost alreadyThis was closer to what 50 Cent did to Ja Rule. Can Jim Cramer & CNBC recover?
C.N.B.C., Get gunned up and clapped quick/Dylan Ratigan get gunned up and clapped quick/Your whole damn network gunned up and clapped quickThis interview seemed like it should've been on a Beef street DVD. The interview was clearly an example of Stewart being 20 steps ahead of Cramer. This was a chess vs. checkers moment on par with Couric & Palin.
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