Tom Cruise  is reprising his amazing Tropic Thunder  character Les Grossman to be the "producer" of the Robert Pattinson  himself, and it's all about his hair — though these days his famous locks are a lot shorter ! Rob will be appearing during the show to debut a new Eclipse  clip alongside Kristen Stewart  and Taylor Lautner . We love to see Rob's sense of humor alongside one of Tom's funniest roles — warning, language NSFW. Tom and Rob fist bump? Awesome.