No one in Hollyweird. If it's someone in the movies, I like Takuya Kimura, Junichi Okada and Takeru Satoh. Hiroshi Abe is another (he was so good in Thermae Romae, I couldn't stop laughing while watching!) My favorite might have acted back in 1997 and early 2000s, but he's a singer.
Jackie Chan! What a legend! I enjoy him too for his unique style of filmmaking. I also like Harrison Ford mainly because of Indiana Jones and Han Solo and Michael Caine because he is veteran in acting and considered one of the best actors ever.