Since a webcomic is still-format, look at photography rather than film.
For visually-interesting film, work off the ones you already like. Also, take a look at indie movies. Then I would suggest you either take a class or two, or look at Film Making for Dummies.
Stayin' Alive
Learning more about composition
is probably the best place to start, comic wise.
edited 23rd Jan '12 12:46:30 PM by Dec
Nemo enim fere saltat sobrius, nisi forte insanit Deviantart.
Zzzzzzzzzz
Wally Wood's "22 panels that always work.
◊" Learn them. Love them. Live them.
They largely work as starting points in film and animation, as well.
edited 23rd Jan '12 2:04:43 PM by Madrugada
...if you don’t love you’re dead, and if you do, they’ll kill you for it.
Browncoat Reaver
These are really good. 
A bit uncanny valleyish animation, though. 
And when I say amateur, I mean me, some friends, and a few cheap camcorders.
You're talkin' a lot, but you're not sayin' anything. — Talking Heads, 1977
Eh, at least you have more than one camera.
I want to get into webcomics and amateur filmmaking in the near future. I'm still in brainstorming/preproduction of a comic I'm working on (need to work more diligently), and I want to know where I can find books/websites/etc on interesting "camera" tricks for comics and actual camera shots for film. Or just recommend comics and movies to take inspiration from. Visually striking stuff like Film Noir and horror maybe.
You're talkin' a lot, but you're not sayin' anything. — Talking Heads, 1977