1. Alec Baldwin
Every role Alec Baldwin has played is overrun by manliness and charm, from the scotch-swilling corporate executive Jack Donaghy in 30 Rock to marine lieutenant Jack Ryan in The Hunt for Red October.
2. Nathan Fillion
What's more masculine than playing the captain of a spaceship run by vigilantes in a western-themed scifi series?
3. Sean Connery
The most iconic James Bond. And that's just for starters.
4. Clint Eastwood
Clint Eastwood's legendary visage has been on the screen (and behind it) for decades, and virtually every role he's played has been a badass one.
5. Jack Nicholson
You can't handle the truth, that Jack Nicholson is still one of the manliest men in entertainment, even at 74.
6. George Clooney
The most well-known bachelor on the planet, George Clooney is charming and rugged, with a huge array of masculine characters under his belt.
7. Steven Seagal
This list's not necessarily about great acting. Even if most of the people on it are excellent actors, Steven Seagal's definitely the one who's kicked the most butt.
8. Harrison Ford
Harrison Ford has the perfect mug, voice, and style to play any man's man. He's Indy, I mean, come on.
9. Christian Bale
Either as a suave businessman (and uh, a bit more) in American Psycho or the face of the newest Batman, Christian Bale is one of the manliest men around.
10. Tim Allen
Tim Allen's been playing a man's man for most of his career, which itself started based on his comedy talking about the differences between men and women. He's got a new series premiering Tuesday Oct 11, 8|7c on ABC called Last Man Standing, and it's about just that: but begs the question, "How does a man survive in a woman's world?"