Mine has just done BG and Heroics, but ret paladin feels stupid clunky. I plan to keep the paladin around for giggles but I've moved onto leveling a new class for now.
Rets have a talent "Acts of Sacrifice" that allows them to Cleanse movement impairing effects. They also get 15% movement speed from talents and 45% movement speed for 4 seconds when they judge someone 15 yards away. They be movin.