Kaitlin Olson is very good at what she does on It's Always Sunny In Philadelphia, including sinking into a bog in one take.

The longest-running live-action sitcom in American TV history just made its return to the small screen with a perfect Rotten Tomatoes score.

His greedy, gun-toting character has been upto cringey high jinks for 20 years now. DeVito, who misses Philly and his Shore ...