Here's a chance to flex some muscle and tell Hollywood who should be the next big action hero. The old guard (Harrison Ford, Arnold Schwarzenegger, Sylvester Stallone) don't quite have the same grip on the box office that they used to. And the action genre could use some fresh blood. So far, readers have sounded off about Asian martial-arts whiz Jet Li (Romeo Must Die), Brendan Fraser (The Mummy), Angelina Jolie (video vixen Lara Croft in the upcoming Tomb Raider) and Ashley Judd (Double Jeopardy). A couple of TV newcomers also are coming on strong: Nicholas Lea (Krycek on The X-Files and the fall mountain-climbing thriller Vertical Limit) and David Boreanaz (the star of Angel). Let us know what fresh face you think would make a great action hero and explain your choice.