With the open-source nature of Google's Android platform, there should be no shortage of games available when it goes live in a few weeks. If you're waiting for really high-profile games though, you'll have to keep waiting--for now.
According to a story posted at Pocket Gamer, EA has stated that they're planning to support Android when Android can support them. In other words, when they can make money from Android games, they'll begin developing them.
According to the Pocket Gamer article, EA states, "EA will support the Android platform, as any platform that can deliver a robust game experience is good for introducing new consumers to mobile games. EA Mobile has elected to wait for the launch of a content-billing solution to bring their premier IP to market." Judging from the wording there, though, EA could release some smaller games before throwing in its hat with its "premier IPs."
So yeah, really can't wait for that version of Madden that plays and looks nowhere near as good as the console version. Should be awesome. OK, that's mean, but football games on handhelds inherently suck, IMO. A version of The Sims or Spore might be cool, though.