 Kunyora kuenderera mberi kweiyi ndima - Kutanga muna 1982, Shaffer akashanda semutungamiriri wemimhanzi yeDavid Letterman yekupedzisira hurukuro dzehusiku: semutungamiri we The Worlds Most Dangerous Band ye Late Night naDavid Letterman 19821993 paNBC, iyo yaakanyorawo rwiyo rwemusoro, uye semutungamiri weCBS Orchestra ye Late Show naDavid Letterman 19932015 paCBS. Letterman akaramba achisimbisa kuti kuchinjwa kwechiratidziro kuCBS kwaive nekuti NBC yakadzinga Paul nekuba mapenzura kana chimwe chikonzero chisina basa. Shaffer muenzi-akagamuchira chiratidziro kane apo Letterman akanga asina kuwanikwa: February 9 na 11, 2000, panguva yekudzoka kwaLetterman kubva pakuvhiyiwa kwemwoyo wake wechishanu; March 24, 2003, apo Letterman akanga achitambura ne shingles; uye January 19, 2005, apo Letterman akaenda kunogamuchira mubairo wekukunda kwechikwata chake mumakwikwi eIndipolis 500 muna 2004. 