Matt and Lucy attended the world premiere of The Good Shepherd in New York on Monday. Matt is pictured below with Lucy, Angelina Jolie and Robert De Niro (his mother also attended but is not pictured).
A clip from Letterman of Matt imitating Matthew McConaughey is at the CBS site or You Tube. If anyone can provide a summary of the show in the comments section it would be appreciated.
Photos of Matt outside the Letterman studio are here.