Sam lands one in "Hand to Hand," the April 6, 2010 episode of NCIS: Los Angeles. If there's any guy who can go undercover, it's him.

Sam Hanna in "Hand to Hand," the April 6, 2010 episode of NCIS: Los Angeles. It's an MMA-themed episode.

Or something like that. More like he kicks ass and takes names.

If you think Kensi can't hold her own in the realm of martial arts, then think again. This is one bad ass agent!

LL Cool J somehow seems like he'll fit right in this week on NCIS: Los Angeles. It's an MMA-themed episode.

Callen and Sam in "Blood Brothers," last night's episode of NCIS: Los Angeles. These two guys are not to be messed with.

This is G. Callen. He's a legend at NCIS, played by Chris O'Donnell. Don't get on his bad side.

LL Cool J as Sam Hanna in "Full Throttle," from the first season of NCIS: Los Angeles. An undercover street racing ring is about to get busted up!

Special Agent Sam Hanna in "Full Throttle," the 17th NCIS: Los Angeles episode of the show's debut season. What will he and G. be up to this week?

Kensi Blye in "Full Throttle," the March 9 episode of NCIS: Los Angeles. This agent has come into her own this season.

Callen gets down to business on NCIS: Los Angeles. What do you suppose our favorite undercover agent is up to this week?

Callen goes to traffic school in "Full Throttle." But you know G. He's always up to something.