9 Facts About Bob Newhart

1. In 1985 Bob Newhart was rushed to the emergency room, suffering from secondary polycythemia, after years of heavy smoking.

2. In June 2015, Bob Newhart appeared on another series finale, the final episode of Hot in Cleveland playing the father-in-law of Joy Scroggs.

3. On December 19, 2014, Bob Newhart made a surprise appearance on the final episode of The Late Late Show with Craig Ferguson, where he was revealed to be the person inside Secretariat, Ferguson's on-set pantomime horse.

4. At that year's Emmy ceremony, Bob Newhart appeared as a presenter with The Big Bang Theory star Jim Parsons and received an unexpected standing ovation.

5. In 2011, Bob Newhart appeared in a small but pivotal role as a doctor in Lifetime's anthology film on breast cancer Five, and in 2013, he made a guest appearance on The Big Bang Theory as the aged Professor Proton, a former science TV show host turned children's party entertainer, for which he won the Primetime Emmy Award for Outstanding Guest Actor in a Comedy Series.

6. In 1995, a 65-year-old Bob Newhart was approached by the Showtime cable network to appear in the first comedy special in his 35-year career.

7. In 1992, Bob Newhart returned to television with a series called Bob, about a cartoonist.

8. In 1968, Bob Newhart played an annoying software specialist in the film Hot Millions.

9. In the mid-1960s, Bob Newhart appeared on The Dean Martin Show 24 times, and on The Ed Sullivan Show eight times.