Unified interface? Maybe not:

tumblr kspsahPJYv1qz50x3 The Many Sliders of Photoshop CS4
Preferences > Memory Usage

tumblr kspsb2gNL71qz50x3 The Many Sliders of Photoshop CS4
Adjustments > Brightness/Contrast

tumblr kspsc0KPgp1qz50x3 The Many Sliders of Photoshop CS4
Filters

tumblr kspsciBwGX1qz50x3 The Many Sliders of Photoshop CS4
Blur (note the rendering of the thumb arrow)

tumblr kspsdtPkv31qz50x3 The Many Sliders of Photoshop CS4
Layer Blending

tumblr kspsecXO4P1qz50x3 The Many Sliders of Photoshop CS4
Layer Style

tumblr kspt5g45h01qz50x3 The Many Sliders of Photoshop CS4
Threshold

tumblr kspta24mBT1qz50x3 The Many Sliders of Photoshop CS4
Color Balance

via Neven Mrgan’s Tumbl.