The rapper’s 1991 hit “Mama Said Knock You Out” provides the soundtrack for Pfizer’s cancer-busting commercial.

Thanks in part to LL Cool J‘s "Mama Said Knock You Out," Pfizer's new Super Bowl commercial will leave viewers feeling hyped ...

LL Cool J is bringing back an iconic hit for a Super Bowl ad that packs a punch — literally. In Pfizer’s “Knock Out" ad, a young cancer patient is first shown laying in a hospital bed ...