I'll add to the band list:
1) The Kinks
2) The Yardbirds
3) Dave Clark 5.
4) The Troggs
5) Manfred Mann (early, pre Earth Band)
6) Gerry and the Pacemakers
7) The Four Tops (I was getting a bit Anglo-centric )
8) The Rolling Stones (early stuff)
9) The Animals
10) Dave Dee, Dozy, Beaky, Mick and Tich.
And finally, the Kinks again (I really like the Kinks)
There's plenty more, feel free to add your own.
Another idea I'd like would be be "Rockband: One Hit Wonders." So many great songs to choose from in that genre. They'd probably be cheap to license too.