In this episode, Marshall says he's never had a reason nor desire to ask Lily to do a favor for him "no questions asked". However, in S2E02 "The Scorpion and the Toad" after Lily returns from San Francisco and Barney has just "rack jacked" twins from Marshall, he asks her to do him a favor but to never ask him why. Lily then goes into the bar and throws a drink in Barney's face. Moments later, pretending to be her own twin, she does it again.
In this episode, Marshall, played by Jason Segel, says he thought he saw Bigfoot, but it turned out to be Russell Brand. Jason Segel and Russell Brand starred together in Forgetting Sarah Marshall (2008).