This NCIS: Los Angeles star rose to fame in the 1980s to become one of the most successful rap artists of all time. Since then, he's established himself not only as an actor, but also an entrepreneur with his own record label, production company and social networking site. Here are five things you probably don't know about LL Cool J -- host of this Sunday's Grammy Awards!
1. Has said that Bruce Lee inspired him to act.
2. Had to endure 12-16 hour filming days while writing his fitness book LL Cool J's Platinum 360 Diet and Lifestyle.
3. Is nearly fluent in Spanish and has studied Arabic because his NCIS: Los Angeles character Sam Hanna is fluent in the language.
4. His favorite concerts ever were the 2009 launch of U2's "360 Degrees" tour in Barcelona and Run-D.M.C.'s "Raising Hell" tour.
5. His favorite cologne is Gendarme.