Screenshots may not be the same you see by using ENBSeries, that's because of different versions of mod, implemented effects and their algorithms, presets.
Videos are also mostly work in progress and differ.

Users screenshots

You can see much more screenshots on the forum and other resources, for example gtaforums.com have several threads with screenshots.

TES Skyrim on the forum
TES Oblivion on the forum
Fallout New Vegas on the forum
Fallout 3 on the forum
GTA 4 on the forum
GTA San Andreas on the forum
Stalker on the forum



Technical screenshots from development progress

TES Skyrim
Test Drive Unlimited 2
Deus Ex Human Revolution
TES Oblivion
GTA 4
Resident Evil 5
Burnout Paradise
GTA San Andreas
Richard Burns Rally
GTR Evolution
Deus Ex
Guilty Gear
Resident Evil 4 Biohazard
Mafia
Parallax fun from GTASA and NOLF2
Serious Sam 1 Dx8 to Dx9 convertor
Driver Parallel Lines
Stalker
Half Life 2
Crysis