As a DM, sometimes, if it's funny and if it's not going to mess stuff up too much -- although my players have given me a "no, seriously" rule. If I have a character talk in a funny way, he has to continue. The captain of their scientific research vessel in my d20M game spoke in a Cockney falsetto for a long time. It was awful.
As a player, always. Life's too short. And I'm decent with accents. My dwarves tend to sound like Sean Connery, which is always a hoot.
As a player, always. Life's too short. And I'm decent with accents. My dwarves tend to sound like Sean Connery, which is always a hoot.