Peter Jurasik born April 25 1950 is an American actor He began his professional career as a stage actor working in off Broadway productions in New York and later in tours and regional theaters up and down the east coast In 1975 he moved to Los Angeles beginning a twenty five year run as a character actor continuing to act on stage but additionally working in feature films in nightclubs doing comedy and especially on television with hundreds of TV appearances in both comedies and dramas Audiences seem to remember him best for his work on Hill Street Blues as Sid and later in Babylon 5 as Londo Mollari He has received awards for his work on both of these shows