The season finale for Prison Break was excellent imho, really looking forward to season 2. I think going to a third season would probably be pushing it.
Lost 2x22 "3 Minutes", tonight
With the summer hiatus starting soon there isnt going to be much on, although SG1/SGA will be restarting in July.
The West Wing also had a great final year, shame to see it go, although Im really looking forward to the new Aaron Sorkin show "Studio 60 on the Sunset Strip", starting in Sept/Oct in the US. Great cast (Timothy Busfield, Nate Corddry, Evan Handler, Judd Hirsch, D. L. Hughley, Carlos Jacott, Sarah Paulson, Amanda Peet, Matthew Perry, Steven Weber, Bradley Whitford) and one of Hollywoods finest writers, should be good.