I like inking and coloring the most ^^ I agree with @Inspector_Spinda, I find inking relaxing, kind of therapeutic for me. I don't like sketching out the panels as much as the rest of the processes. I think my list from favorite to least favorite goes like this:
Inking/Coloring (they're pretty much equal favorites xD)
Thinking of ideas
Planning out dialogue/actions
Researching/Finding references
Editing
Sketching/Storyboarding for an episode
Overall, I enjoy everything, just in varying amounts. Sketching doesn't get me as pumped as the other processes because it's a bit slow and isn't close to the final result. The beginning processes like thinking of ideas and planning out dialogue and scenes, researching/finding references isn't close to the end result either, but I love to write and think of a bunch of ideas ^^ And once I start sketching, I just want to be done with it so I finish it up all nice. It's kind of the middle of my process (probably passed the middle but still) so it's like the Wednesday of my art process. Just want to get over that hump!