Ok, now that we've firmly established that Steven Segal and his films are both held in rather low esteem here, and since his films would pretty much all fit into the general category of "Action Adventure" the logical questions are - Who is your favorite "Action Adventure" star? What is your all-time favorite movie in that genre? The star you pick does not necessarily have to be in that movie.
I have to go with Harrison Ford as the star. My favorite movie though would be Commando with the guvenator at his monosyllabic best I've worn out two tapes and my DVD is showing signs of age. Almost pure uninterrupted violence, with only minimal plot to distract from that.