- Charlie Day (Charlie Kelly)
- Glenn Howerton (Dennis Reynolds)
- Rob Mac (Ronald 'Mac' McDonald)
- Kaitlin Olson (Dee Reynolds)
- Danny DeVito (Frank Reynolds)
It's Always Sunny in Philadelphia — S0E64
Episode: Behind the Scenes " A Very Sunny Christmas"
Air Date: 2010-12-10
Runtime: 22 min
Overview
Behind the Scenes " A Very Sunny Christmas"