Zach Galifianakis was largely known as a stand-up comedian who generated a buzz on Will Ferrell and Adam McKay’s Funny Or Die comedy website with the interview show Behind Two Ferns With Zach Galifianakis.

However, his profile was heightened after he co-starred in The Hangover in 2009, which became the highest-grossing R-rated comedy of all time. Since then, he’s done roles in films like Up In The Air, Dinner For Schmucks, and Due Date and stars as comic book artist Ray Hueston in the HBO comedy series Bored To Death.

Now the 41 year-old returns to the fold known as the Wolfpack once again as Alan Garner in The Hangover Part II. Galifianakis talks about what he felt was the most challenging experience of shooting the sequel.

“I think, in general, just the city itself,” Zach believes, “Just getting used to the city for the first few days and the jetlag was a little bit tough, but once you got there and you got settled in, the people are so brilliantly nice that you feel welcome and it’s a great society, it really is.

Zach talks about his favorite restaurant he got to go to in Thailand.

“Top Menu,” Galifianakis replies, “There’s another place called Very Top Menu. Don’t go to Bottom Shelf.”

Galifianakis also talked about the experience of having to play the same character again in a sequel.

“One of the big differences was the outfit,” he remarks, “No, I think with the sequel, the audience or Todd [Phillips] wanted to see, or we all wanted to see, is us kind of turning against each other a bit, which was fun to watch. It kind of calls for it, for Phil and Stu and kind of all crash, even Phil and I have a strong relationship like I admire him, but he gets mad at me.”

“And he’s been real gentle with me in the first one, but this one, I think he’s at his wits’ end, so I think that was something new that we explored,” Zach adds, “To go behind-the-scenes to see people in their environment, to see Alan in his bedroom, I think, was really a lot of fun.”

Zach was asked if we are to see an even crazier Alan, who revealed himself to be an already fairly eccentric character in the original Hangover, in the sequel.

“I think he’s in a lot of mental trouble for the rest of his life,” Galifianakis replies.