The downside to working almost exclusively digitally is that sometimes my mouse's batteries die and I have to wait a while as they recharge, stopping my workflow for a couple of hours. (Yeah, I could charge them overnight but if something went wrong and the plug exploded and my flat burned down as I slept in it... well, where would we all be then? Eh?)
Today, as I was waiting for said event to conclude and Crocodile Dundee was on TV, I started sketching Tarzan based on the fact that one of the characters in the film said the name. I only had a cheap biro and copy paper to hand, but that's sometimes a lot more conducive to quality work (less pressure to get it right, I suppose).
Added some quick colours in Photoshop, ate a pizza and voila! Tarzan!