Part of the Weekly Top 40's appeal in the '80s - and how it differentiated itself from the more sober AT40 - was Rick's colorful, signature use of goofy sound effects and comedy voices, often at the end of each segment before commercial breaks. The voice impressions were by Rick and his wife Julie (a talented voice actor) as well as other mimics, and included characters imported from Rick's popular morning show on KIIS-FM. Characters heard on the Weekly Top 40 through the '80s and beyond included "talent booking agent" Bernie Shelley of "Possessive Artists" and his ditzy receptionist; countdown "technician" and wino Willard Wiseman; snide gossip columnist Groanin' Barrett; snappy workout guru Jane Fondle with her Radio Aerobics; call-in airhead John Revolting; salivating agony aunt "Crabby"; tittering sex therapist Dr. Rude (a spoof of popular radio and TV sex therapist Dr Ruth Westheimer); and "Joan's Clone", a take-off of comedian Joan Rivers.