Danny Phantom-The concept of Mr. Crocker becoming half-man, half-cheese due to a machine built by Cosmo and Wanda is similar to Danny Phantom becoming half-ghost when he used his parents' machine.
Batman - When Crocker discovers his powers, he decides to use it for evil when the coin is tossed to tails (2 times out of 3). This is similar to how one of Batman's enemies, Two-Face, would do to decide a victim's fate.
Spider-Man - Crocker shooting cheese webs is a spoof on Spider-Man' spider webs shot.
The Wizard of Oz - Crocker saying "I'm molding, molding." while he is being enveloped by the moldy lasagna is a spoof of The Wicked Witch of the West's quote "I'm melting, I'm melting" when she was melting after being splashed with water.
Mr. Crocker catches Timmy with Cosmo, Wanda, and Poof in plain sight in this episode and then captures them. Timmy also says to Crocker to let his fairies go. Despite those occurring Timmy's fairies weren't taken away as accordance to Da Rules. Jorgen didn't even bother appearing. However given how many life threatening situations Timmy (and his fairies) has gone through by this point, Jorgen may have changed that rule slightly because of Crocker since he already knows that Timmy has fairies (due to his own theories on that and that he saw them clearly in "Pipe Down!") and that he is so obsessed on catching mainly Timmy's fairies.
When Timmy says "How else did I get my rocket powers?", the captions spell "How else could I get my rocket power?".
When Crocker weakens, he says "Wow, I didn't know I could ever feel this weak." but the captions spell "Wow, I didn't know I could ever feel this week".