He calls "Bedrock" the first pop music reference to The Flintstones since "Bedrock Anthem".
"Eat It" and other food-related songs come to his mind while trying to figure out why "Carry Out" was ever written.
At the beginning of Usher's "OMG" video, he's wondering if he's watching Weird Al's "UHF" video because they both start by zooming in on an old-fashioned TV.
In his review of "Telephone", he considers the reason for the recent trend of making references to cell phones in pop music. "RINGTONE!"
When he considers that Katy Perry's "Firework" would work better as something more permanent and useful, like firewood, he immediately sets the concept to music. "Watch out, Weird Al!"
He uses "Good Enough For Now" as the intro music for his Top Ten Songs About Mediocre Romance, and gives bonus points to anyone who actually knows it.
During his review of "Gangnam Style", he mentions him to explain how parodying an intentionally funny song doesn't work. And then cites "The White Stuff" as an example of how parodying an unlistenable song results in another unlistenable song.
The image of Satan seen in the "Like a G6" review is from the Doctor Who episode "The Satan Pit". (Although, in the commentary, he admitted that he had no idea of the source and had just Google image searched for Satan pictures.)
In the comment for "Like A G6", he says that "Swear upon the good book" cutting to Johnny Cash's autobiography was a reference to High Fidelity.
His speech after joining - and subsequently quitting - TGWTG.com is a paraphrased version of Conan O'Brien's final Tonight Show "farewell speech". There is a chance that this, however, is a Take That - it all really depends on whether or not Todd is a fan of Conan O'Brien.
He makes a quick reference to Teen Girl Squad in his "Deuces" review, after they mention "Valentimes", and there's a clip of Homsar in the "We Are The World 2010" review.
Very subtle one in his review of "Club Can't Handle Me". When he is talking about the "lyrics" in the verses, he says "blah blah blah, Leonard Bernstein", which is a reference to a verse in the similarly incoherent "It's The End Of The World As We Know It", by REM.
He later referenced this game by having a wallpaper with Fatty Bear inside a "no" sign.
His trucker lingo gibberish in "The Top 10 Worst Songs of 1976" eventually turns into the song-within-a-song from "The Devil Went Down to Georgia."
Since the number one song is "Afternoon Delight", he naturally includes footage of its use in PCU, wherein people jump off a balcony to escape the song after being locked in a room with it placed on repeat.