Huzzah!

A tendency to suddenly and inappropriately exclaim, "HUZZAH!" was attributed to the Babylon 5 character Marcus Cole:

alexgariepy Hey, Ivanova. HUUZZZZAAAAAAAAAH! "It's whazzup, you klutz!"

alexgariepy HUZZAAHHHHHHHHHHHHHH! Will you cut that out, Marcus?

Link:

http://www.glitterrock.org/five65.html