That's Bruce Lee.
The Big Bang Theory Season 3, Episode 16
...because opportunities
to have gelato with Stan Lee...
The Big Bang Theory Season 3, Episode 16
Oh. Oh, Stan Lee. Cool.
The Big Bang Theory Season 3, Episode 16
I need you to call Stan Lee,
Leonard Nimoy
The Big Bang Theory Season 7, Episode 14
Mine says, "To Raj. From Stan Lee."
The Big Bang Theory Season 3, Episode 16