Well, Verizon realizes how big the gaming industry is and it has jumped in. Surprisingly, I think it'll make quite the splash. They just launched their Games-On-Demand service and for $14.95/mo you can play full version PC games. I was thinking they'd list old games that never made it far (and there are some of those) but there are actually some really nice games on the list. I've found quite a few that I've played or have always wanted to play.
Check it out here: http://verizon.exent.com/gamesondemand