Summers (b. 1951) has been a game show host since the early 80s. He hosted Double Dare from 1986 to 1993, which is what I most knew him from.
Since the show's cancellation, Summers has hosted various shows on Lifetime, The History Channel and back to Nickelodeon. He has seen several reiterations of Double Dare pop up, including a touring show that began last year.
I mailed to Summers on August 31 and got the cards back on September 14, for a 14-day TAT.