After a trip to Las Vegas after the movie release of Hangover, you just can not see that town in the same light ever again. It's an insane town where the Hangover story line is lived out nightly by thousands of tourist - 24/7/365. It inspired me to paint the one character that had no speaking part, but was easily the best supporting actor ...Carlos. He was the one sane character in the movie who was juxtaposed against the antics of the city and it's party life style that inspired the movie.
I cannot believe that no scenes in the movie were shot in the Hofbrauhaus Beer Hall. An institute that has fostered many-a-hangover, I am sure.
Yes you could argue that the tiger and the chicken had no speaking part, too.

