From Celebrity Rehab stars to pilot leads — that’s the career trajectory for Eric Roberts and Tom Sizemore, who landed major roles on pilots this season: Roberts is the star of ABC’s dance drama Grace, and Sizemore co-stars opposite Ethan Hawke in Fox’s Exit Strategy. (Sizemore was a cast member of the third season of VH1’s Celebrity Rehab in 2009; Roberts was on the reality series last year.) Add to them Don Johnson, star of Michael Patrick King’s NBC pilot A Mann’s World, who also has a history of substance abuse and brushes with the law. In a pilot season overshadowed by the spectacle of current TV bad boy Charlie Sheen, it is nice to see the bad boys of yesteryear getting redemption and another chance at stardom. Let’s hope Sheen will get that too in a pilot season a decade from now …