Gael García Bernal's close friend, actor Diego Luna, has a cameo in the film. He's seen for just a few seconds in the assault on the Moncada Barracks, where he's shot.
Just for the note, I'm not Diego Luna, that's just my nickname =P
Showtime's Fidel has a good start. Terrible ending. Pretty bad for us lefties. Very yankee-made, which doesn't make the film objective at all. Lefties... be warned. Right wingers... enjoy.