Yes, Asian-Americans have been typecast in the Entertainment Industry. Before the time of Bruce Lee, Asian-Americans were never shown on screen, but now we've been typecast as kung-fu warriors, asian mafia (triads), or the comedy factor.
Granted all of that, I'm starting to see more incorporating of Asian actors into roles, but there is still no sign of Asian-Americans being cast into a leading role unless a film is of Asian-American Interest
One of the pioneering actors is Ken Jeong from the Hangover series. He's really funny, but he gets typecast into being the same character in every movie even in Transformers:Dark of the Moon
YouTube does however allow for social commentary to be expressed that wouldn't usually be expressed otherwise. Look at Timothy De La Ghetto. He addresses issues of Asian American interest, but does so in a way that is funny, makes a point, but shouldn't be taken too seriously.
Also, the pool of Asian-American talent is endless on YouTube. Singer/ Songwriters like David Choi, Kina Grannis, Jane Lui, and AJ Rafael along with many others have been able to breakthrough into different fan bases in different countries. That being said, Asian-American artists, especially on YouTube look to be accepted for just being "artists" without having to fit within a mold of being "Asian-American" because in the end, that's only a part of who "we" are."
I was very impress with Brian's views about this whole concept, and with his permission I decided to show you:
A True Artists at Work