The Doom Classic Complete bundle is now available on the PlayStation Network for the PlayStation 3 and it includes Ultimate Doom, Doom 2: Hell on Earth (with the additional expansions The Master Levels and No Rest for the Living) and Final Doom. You can get the whole bundle right now for $14.99.
The Master Levels and Final Doom are two of the most notable additions of this package, mainly because they weren’t included in the recently released Doom 3: BFG Edition. For those unfamiliar, The Master Levels features twenty independently designed levels (plus a secret one) for Doom 2. On the other hand, Final Doom consists of two Doom 2 mods: The Plutonia Experiment and TNT Evolution.
Oh, by the way, this is the reason why I like Doom so much.
Source: Bethesda Blog