He wrote the NBA on NBC basketball theme "Roundball Rock", and hosts the Intelligence for Your Life radio show.

[2] Tesh has won six Emmys and has four gold albums, two Grammy nominations, and an Associated Press award for investigative journalism.

He has previously worked as a sports commentator and host for the Olympic Games, Wimbledon, the US Open, the Tour de France, Ironman Triathlon, and as a news anchor and reporter.

[2] While in the area, Tesh worked as a news anchor in Raleigh, Orlando, Nashville, and New York's WCBS-TV; this portion of his career spanned 12 years.

From Nashville, Tesh shuffled to WTVD in Durham, North Carolina, then down to WFTV in Orlando, and finally up to New York's WCBS-TV, where, at age 22, he was their youngest reporter.

In 2014, Tesh returned to syndicated television in the series Intelligence for Your Life TV, based on his radio show.

Being good friends, Tesh asked Yanni if he could join the band as keyboardist along with Joyce Imbesi and drummer Charlie Adams, as he had never been onstage for a live performance, and he needed the experience.

Despite already having a full-time job with Entertainment Tonight, and the long hours of rehearsal for the band, he performed exceptionally well, although he participated in only one tour with Yanni, playing in approximately twelve shows, including the "1988 Concert Series", before being replaced by Bradley Joseph.

In order to recall his idea at a later juncture, Tesh recorded the initial beat vocally on his answering machine, by ringing his home phone and leaving a message for himself.

Also featured were Olympic gold medal-gymnasts Nadia Comaneci (1976) and Bart Conner (1984) performing gymnastic routines specially-choreographed to Tesh's music.

[2] These factoids are called "Intelligence for Your Life", played on radio stations across the United States and Canada, and the Armed Forces Network.

The program was originally syndicated by Westwood One under the name On the Air with John Tesh, albeit with a slightly different format.

[17] In late 2014, a television version of these factoids, Intelligence for Your Life TV, debuted in syndication to local stations.

[9] Tesh also authored a book, Intelligence for Your Life: Powerful Lessons for Personal Growth, in 2008, reprinted in 2012 (ISBN 0849964636, publisher Thomas Nelson).

His wife also has a son with actor Gil Gerard, named Gib, who now appears on some of Tesh's radio and TV programs.