'The Good Wife' star was joined at the Beverly Hills event by Les Moonves, Jimmy Kimmel, Michael J. Fox and special guest Nanci Ryder.
"Those guys have been trying to make money off of me since I got into this business," Tatum says of two men who have accused him of using their real-life stories in his new film.
In an exclusive clip to THR of next Tuesday's "Pulling Strings," the two work together to find a missing violin.
Julia Roberts, Alec Baldwin, Matt Bomer and Jim Parsons to Star in Ryan Murphy’s Next Film (Exclusive)
The quartet join Mark Ruffalo in the "Glee" co-creator's adaptation of "The Normal Heart."