Not dead.

Music, thinking about it like a soundtrack in a movie. You think about the "scene" with the "soundtrack" in the background- then you've got an image in your head to draw and music to push you to draw it.

There's also looking at other people's art. Other styles. "Imperial Boy" inspired me to start drawing intricate landscapes, for example. Search him on googleimages. His art is insane.

Or you can just watch some old Hey Arnold eps- that usually helps, especially since you're lookin' for inspiration to draw HA stuff in particular.

*shrugs* Different people have different methods. My suggestion is to just play around with different settings to draw in, music, watch some artsy flicks (Miyazaki flicks- Spirited Away, maybe?) and try not to put too much pressure on yourself. A lot of these "great professional artists" out there take MONTHS to complete a single piece. Work at your own pace when inspiration strikes.

Personally: If you're uninspired or unmotivated or art-blocked, it's harder to draw and get it to come out how you want. It's better that artists work at their own pace and come out with an AWESOME piece in a few weeks than doing a crappy piece in a day.

Good luck.