NCIS: Los Angeles is one of the hottest television series around and the two hot celebrities of the show may be the reasons why. On the set of NCIS: LA with Chris O' Donnell and LL Cool J with ET online, according to Lisa Petrillo,

"You know you're in Hollywood, actually at the famed Paramount Studios back lot where nothing is as it seems. On one side, it's about Boston, across the street it's New York and behind we're in Mexico; the setting for today's big scene."

Special Agent Sam Hanna, played by LL Cool J said "This is Hollywood and the beauty of what we do; is we get to take our imaginations and make it a reality for people and let them escape from the everyday drama and reality shows and come into our fantasy world where our characters represent people that truly exist. It's so it's cool."

There is no denying the chemistry between the two celebrities, Chris O' Donnell and LL Cool J, after NCIS LA six seasons. So during the interview with ET online, the pair confirmed that they have developed a rapport on and off screen.

LL Cool J added, "Chris is just a great person to work with, great family, good guy, solid, swing a gold club good. Good guy."

Chris answered, "He's alright."

Both are from various backgrounds, O Donnell, 44, by way of films and LL Cool J 46, by rap music, they have formed a real relationship with their roles as special agent partners on the CBS series hit. The fans have been very fond about their partnership since the start of the start.

Chris explains, "We're very grateful. In our off-time we get to meet a lot of them and the reaction we get from them is amazing. They're very supportive. That would be pretty cool actually. I don't know when we'd find the time to do it. Obviously being on network TV there's certain limits to what we can do so we'd have a completely different world to play with Chris joked. "