The best pop-culture Pi Day tributes

Marvel's 'Avengers of Ultron' cherry pie

Snack time with 'Doctor Who'

'Mythbusters' breaks it all down

Does this make Pi Day a Hallmark holiday?

OK, we did not see this one coming

You knew you weren't going to escape 1980s hair-metal band Warrant today

In case you need help getting that song out of your head now ...

And finally, you can't talk about pie (OK, Pi) without Eric Cartman