At the beginning, when Kellerman and the brothers are running towards his car, Kellerman carries a gun on his right hand, but in the next shot he has his gun on the left and uses his right hand to take out the car keys.
Throughout the series you learned Terrance Steadman, the person who was presumed dead and killed by Lincoln Burrows is not dead. To prove of his death they removed Steadman's teeth earlier and added them to the corpse that was supposedly him. On this episode Steadman is talking and has a full set of teeth (which are not fake at all) and is shown in various scenes that he still has his teeth.