Shock jock Howard Stern — known for his interviews of porn stars, as well as celebrities like Ozzy and Sharon Osbourne, and Star Trek’s "Captain Kirk," William Shatner — had a much different kind of guest on his Sirius-XM satellite show Tuesday: Senator Arlen Specter.

The Pennsylvania Republican apparently has a huge fan in Stern, who vowed to endorse the senator and financially support his campaign. Specter has appeared on the show several times, but took time during his more recent visit to dish on Rush Limbaugh, his battle with cancer, and how he has never smoked pot.

"I was in Nepal en route and pot was legal in Nepal. I was sitting around the campfire [with] all the Peace Corps volunteers and they were smoking marijuana," explained the Senator. "And here was the chance to smoke marijuana legally and I turned it down … because I don’t want to submit my body to a temptation I might not be able to control."

Here’s a roundup of some of the juicier tidbits of the interview: 

On working while undergoing chemotherapy, Specter said: "I started getting more mail about my hairstyle than about public policy … people wrote me to tell me to shave my head and become a sex symbol." Co-host Robin Quivers asked how he kept his mind on the job. He joked: "Sometimes your fellow Senators are more distracting."

Specter also said he thinks the Obamas have a "spicy marriage," and that it’s "too soon to tell" whether President Bush will go down as a "bad president."  And with regard to everybody’s favorite topic, Rush Limbaugh, The Hill says Specter was asked if the "crackpot" conservative talk-show host is the head of the Republican Party. "I don’t think you can really identify with precision a leader," the senator said. "If you had to pick somebody, I think you’d pick Sen. [John] McCain [AZ]. He was the presidential candidate last time and until we have another one, I think that John’s the titular head of the party."

But Specter opted not to attack Limbaugh, saying he likes the at-times inflammatory radio host. "I never attack prominent radio personalities like Howard Stern or anybody else or people who buy ink by the barrel."