Because they both know how to ask leading questions.
During George W. Bush's presidency, Colbert was fond of asking guests, including Democratic congressmen, whether Bush was "a great president or the greatest president."
WATCH: Stephen Colbert quizzes his guests on Bush.
An online poll on the official Sochi Olympics website appears to leave just as little wiggle room for respondents (H/T to Kirit Radia).
"Are you looking forward to the Olympic games?" it asks.
"I'm really looking forward to them! The Games are a great event, not only for our country, but for the whole world!"
"I'm looking forward to them, because I enjoy sport and follow every Olympics."
"I'm looking forward to them, because I hope for great results from our athletes!"
Despite the optimism of the Olympics pollster, the Sochi games have had their share of controversy: Preparations for the two-week sporting event are said to have cost some $51 billion -- 10 times as much as any previous Winter Games; rights groups have complained of environmental and human rights abuses; terrorism fears prompted by two recent attacks in the southern Russian city of Volgograd have prompted an unprecedented security clampdown; and an antigay law passed in Russia last year has caused some activists to call for an Olympic boycott.
But perhaps Russian President Vladimir Putin himself has taken to the optimism of the organizers. He recently walked back a decree banning "gatherings, rallies, demonstrations, marches, and pickets" before or during the Olympic Games, promising to set up special "protest zones" in Sochi.
-- Glenn Kates