EXCLUSIVE: Chris O'Donnell on Why You Don't Mess With LL Cool J: 'He is a Force to Be Reckoned With'

EXCLUSIVE: Chris O'Donnell on Why You Don't Mess With LL Cool J

'A GRAMMY Salute to 50 Years of Hip Hop’: Will Smith and DJ Jazz…

A Celebration for 50 Years of Hip-Hop: Inside Fresh Prince and D…

‘Wish’: Why Chris Pine Didn’t Feel Confident Working With Ariana…

Why Hugh Grant Felt ‘Anxious’ About Working With Timothee Chalam…

'DWTS': Ariana Madix on Why She's Been Sleeping on a Cardboard B…

Why 'The Voice's Reba McEntire's Wearing a Ring on That Finger (…

'The Last of Us': Bella Ramsey on Why Show's Success Feels 'Biza…

'Sister Wives': Why Kody Thinks ‘It’s Not Safe’ for Him to Be Wi…

Why Rita Moreno's Not Planning on Retiring Anytime Soon at 92 Ye…

‘Dream Scenario’: Nicolas Cage on Why He Wants to Step Back From…

Jessica Simpson on New Music, Her Kids and Why She Feels Like an…

Margaret Qualley Gives Update on Married Life With Jack Antonoff…

Why Mahershala Ali Didn't Break Out 'Obama Two-Step' on Set of N…

Amber Rose on Blac Chyna 'Falling Out,' Why She'll Never Shave H…

‘Titanic’s 25th Anniversary: Kate Winslet on Immediate Connectio…

Chlöe Bailey on Holiday Plans with Sister Halle and New Music (E…

Rob Lowe Shares Regret About His Look in The Go-Go’s ‘Turn on Yo…

Carey Mulligan Gives Update on Baby No. 3 With Hubby Marcus Mumf…
Season eight of NCIS: Los Angeles premieres on Sunday, and ET stopped by the set, where star Chris O'Donnell compared it to a family reunion.
"The cast especially can, a lot of times, feel like your siblings," O'Donnell says. "There are days that you love each other and days that you hate each other."
RELATED: 'NCIS: Los Angeles' Star Daniela Ruah Is Pregnant With Baby No. 2!
Siblings are known to have the occasional scuffle, but no matter how much co-star LL Cool J (real name: James Todd Smith) feels like O'Donnell's brother, the two won't be going to toe to toe.
"That dude is one of the strongest dudes you can ever run into, as we all know," O'Donnell points out. "Todd is a force to be reckoned with."
But is that force strong enough to get O'Donnell to perform on LL's other show, Lip Sync Battle?
"I hope to get some of the guys from this show over there at some point," LL tells ET. "That would be a lot of fun."
NCIS: Los Angeles returns to CBS on Sunday at 8:30 p.m. ET/PT.