Which milestones were achieved this Monday? Take a look:

- Prison Break hit a season high, with 9.58 million total viewers.
- Falling juuuust shy of 16 million viewers, Heroes set yet another series high. (And how about Eden goin' all Superman II Ursa on us?)
- During the 10 o'clock hour, both Studio 60 (down 480K, to 7.31 mil) and What About Brian (slipping 250,000, to 5.35 million) sank to series lows.