Watch Christian Bale Sing 'Power Puff Girls' Theme Song

Christian Bale definitely has a soft side. The actor took some time during his recent promotional tour for The Fighter to sing little cartoon ditty he knows by heart.

Christian is a Powerpuff Girls fan! The actor gave a very humorous rendition of the hit Cartoon Network show's theme song — which he said he learned after watching it with his daughter — during an in interview with co-star Mark Wahlberg for ABC News.

Mark even brought back some Dirk Diggler from Boogie Nights, giving a taste of "You Got the Touch."

The Fighter scored five Golden Globe nominations including a Best Actor for Mark, Best Supporting Actors for Christian and Amy Adams and Best Picture!

Catch clips below!

Mark Wahlberg Boogie Nights — "You Got the Touch"