I like:

-Muted colours that manage not to become pastel
-Low-saturation, low-contrast palettes
-Palettes that incorporate some shade of ecru
-Skin tones
-Pinks
-Browns
-Jewel tones
-Vibrant orange-pinks
-Food-inspired colours
-Science-y colours
-Evocative colour names
-Clever colour names
-When the colour for which I have a clever new name hasn't already been named something crappy


Palettes of mine that I particularly like:










A few gradients: