Paul is very well know for his regular appearances on the Late Show.
Shaffer has appeared in a number of motion pictures over the years, including a major role in Rob Reiner's This is Spinal Tap, Blues Brothers 2000, a scene with Miles Davis in the Bill Murray film Scrooged and as a passenger in John Travolta's taxicab in Look Who's Talking Too. In addition, Shaffer lent his voice to Disney's animated feature and television series, Hercules.
In 1977, Shaffer left SNL for a few months to co-star with Greg Evigan in A Year at the Top, a short-lived CBS sitcom in which Shaffer and Evigan play two musicians from Idaho who relocate to Hollywood where they are regularly tempted by a famous promoter (who is actually the devil's son) to sell their souls in exchange for a year of stardom. Though the series only lasted a few episodes, a soundtrack album was released nevertheless; CBS apparently having expected that the series would be a far bigger hit than it was. Following the series' cancellation, Shaffer returned to SNL, and Evigan's next series, B.J. and the Bear, proved far more successful for him as well. In 1977, Shaffer was also present on the Mark & Clark Bands hit record Worn Down Piano.