Broadway

• RENT ;; LEASE

   

Television

• Angel ;; Cherub
• Battlestar Galactica ;; Warplanet Xeron
• Ben 10 ;; Ken 10
• Buffy the Vampire Slayer ;; Muffy the Undead Killer
• Charmed ;; Blessed
• Coupling ;; Fornicating
• CSI:Crime Scene Investigation ;; CSA: Crime Scene Analysis
• CSI:Miami ;; CSA: Tallahassee
• Dead Like Me ;; Deceased Like Us
• Doctor Who ;; Professor What
• Gilmore Girls ;; Milford Boys
• Heroes ;; Champions
• House ;; Home (of the Asshole Doctor)
• Laguna Beach ;; Redondo Beach
• LOST ;; MISPLACED
• The L Word ;; The D Word
• One Tree Hill ;; Singular Bush Mountain
• Smallville ;; Tinytown
• Stargate SG-1 ;; Wormhole X-Treme
• Supernatural ;; Unnatural
• Torchwood ;; For Water Shops
• The Tudors ;; The Bourbons  

Movies

• The Little Mermaid ;; The Petite Sea Nymph
• Pirates of the Caribbean ;; Ninjas of the Orient
• Sleeping Beauty ;; Slumbering Maiden
• Star Wars ;; Galactic Battles
• Underworld ;; War of the Night
• Underworld Evolution ;; War of the Night: The Next Phase
• V for Vendetta ;; R for Revenge

   

Books

• Harry Potter and the Philosopher's Stone ;; Frank Jones and the Sage's Rock
• Harry Potter and the Chamber of Secrets ;; Frank Jones and the Basement of Mystery
• Harry Potter and the Prisoner of Azkaban ;; Frank Jones and the Hostage of Alcatraz
• Harry Potter and the Goblet of Fire ;; Frank Jones and the Pitcher of Ice Cream
• Harry Potter and the Order of the Phoenix ;; Frank Jones and the Pigeon-Fanciers Club
• Harry Potter and the Half-Blood Prince ;; Frank Jones and the Bastard Child
• Harry Potter and the Deathly Hallows ;; Frank Jones and the Obscure Words
• The Lord Of The Rings: The Fellowship Of The Ring ;; The Master Of The Bling: The Buddy System Of The Prince Albert
• The Lord Of The Rings: The Two Towers ;; The Master Of The Bling: The Twin Brothels
• The Lord Of The Rings: The Return Of The King ;; The Master Of The Bling: The Pimp Brings Sexy Back

   

Anime

• Fruits Basket ;; Vegetables Medley

   

Comics

• Batman and Robin ;; Ratguy and Bluejay
• Captain Boomerang ;; Sergeant Shuriken
• Green Arrow ;; Scarlet Quiver
• Nightwing ;; Duskwing
• Outsiders ;; Irregulars
• Superman ;; Ultraman
• Teenage Mutant Ninja Turtles ;; Adolescent Deformed Samurai Reptiles
• Teen Titans ;; Young Demigods
• X-Men ;; Z-Men

   

Video Games

• Final Fantasy ;; Last Adventure
• Kingdom Hearts ;; Empire Diamonds
• Silent Hill ;; Quiet Valley
• Half-Life ;; Fractioned-Existence

   

Websites

• TMZ Thirty Mile Zone ;; ZMT Zealous Media Tabloid
• Oh No They Didn't ;; Oh Yes They Did

   

If you think of more, please feel free to edit this post. Also, if someone remembers Harry and the Potters or Draco and the Malfoys, they've now become... Frank and the Joneses and Damien and the Luthors. Pretty simple, no?