I have...
Marvel Shelf
X-Men 1-3, Punisher 1989 Workprint, Punisher 2004, F4, F4 Rise of the Surfer, Spider-Man 1-3 & 2.1, MTV Spider-Man series, 70's Spider-Man series, Spider-Man & His Amazing Friends, Hulk 1980's cartoons, Ang Lee's Hulk, Captain America (yes), Daredevil & DD director's cut, elektra, Blade 1-3
DC Shelf
Superman IV UK rental VHS (rare version with extra footage), Superman animated series, Lois & Clark series 1 & 2, Christopher Reeve Superman boxset, 2001 Superman DVD, SUperman II, Superman II 3-disc edition, Superman II RIC, SUperman III UK TV version, Superman Returns, Supergirl, Fleisher shorts, Last Son of Krypton, Batman/Superman Movie, Mask of the Phantasm, Mystery of the Batwoman, Return of the Joker, Batman Vs Dracula, Batman the Movie, Batman 1989, Batman Returns, Forever, & Robin, Batman Begins, Catwoman, Batman animated series, Justice League animated, JLA Tv movie
Others shelf
The Crow, City of Angels, V for Vendetta, The Phantom, Hellboy, Rocketeer, The Shadow, LXG, Dick Tracy, Silver Hawk, Spawn (yeah), Ninja Turtles 1-3, TMNT, 2003 animated series
Aside from those, I have a boxsets shelf (Jurassic Park, LotR, Star Wars etc), James Bond shelf (everything including NSNA and the three MI movies), a Dr Who section, Three Musketeers section, comedy section...
To cut a long story short I have far too many DVDs.