Colbert Bump: Roger Ebert, who gave both The Phantom Menace and Revenge of the Sith three and a half stars (out of four) and couldn't have missed Plinkett's jab at his credibility, posted a link to the Revenge of the Sith review.
Simon Pegg also tweeted his approval of the reviews.
In the comments for Half in the Bag, Mike and Jay are often (affectionally) referred to as "hack frauds", which stems from one of the Couch Gags of the show.
Plinkett: Mike and Jay are frauds!
On /tv/, Josh "The Wizard" and Jack are referred to respectively as Beardfat and AIDS Moby. Mike is also refered to with a huge list of racism-based nicknames, including "Third Reich Mike", Mike "What's wrong with your race?" Stoklasa and other, less worksafe names, in reference to the infamous rant by Garret Gilchrist where he called Mike a closeted racist.
The Other Darrin: Sorta. The Plinkett character originated in a couple of short films, where he was portrayed by Rich Evans. Mike Stokasa, the main writer of those shorts, decided to use the character for the reviews, and performed the voice himself. Evans portrays the character in a full-length movie that came out well after the reviews started, but was produced earlier. Unlike other examples of this trope, the two versions of Plinkett are not in canon with each other, and it's possible that Evans will continue to portray the character in the future.
The line between the two different Plinketts (described by Stoklasa as "Plinkett A" and "Plinkett B") was blurred in "The Revenge of Nadine" short and the Half in the Bag series. In them, Plinkett (as played by Evans) is the same Plinkett that made the Star Wars reviews and became an internet sensation (and who was, of course, voiced by Stoklasa); essentially they seem to have become a kind of The Other Darrin tag team; this was Lampshaded in a Half in the Bag intro which has Plinkett shouting "I don't even know who I am anymore!!!" at the top of his lungs.
Lampshaded in the Half in the Bag review of The Dark Knight Rises, where Mike is forced to do an impression of Mr. Plinkett. Jay tells him that's the worst Plinkett impression he'd ever heard, and no one would believe it's the real Plinkett.
Production Posse: Mike, Jay, Jack, Josh/"Wizard", Jessi, Jocelyn Ridgely, and Rich Evans form the "core" of the posse.
Promoted Fanboy: A fan who created a number of animations about Plinkett (using sound collage from various sources for the voice work) was officially invited to create further episodes under the Red Letter Media banner, complete with newly-recorded Plinkett dialogue specifically for the cartoons.