R is for Rad: Daniel Radcliffe rapping Blackalicious’ ‘Alphabet Aerobics’

Daniel Radcliffe of “Harry Potter” fame is a huge rap fan.

So naturally, when he appeared on “The Tonight Show Starring Jimmy Fallon” on Tuesday, Jimmy asked Daniel about it.

“I’ve always had a kind of an obsession with memorizing complicated, lyrically intricate and fast songs,” Daniel said. “It’s a disease.”

Then Jimmy throws out the challenge — do you know the words to Blackalicious’ “Alphabet Aerobics”?

Daniel says yes, out comes the microphone, Daniel asks to take off his jacket and the rest is viral video history (14.8 million views and counting).

Color us “i” for “impressed” (especially after watching the lyrics fly by in this video below).