My present sketchbook is this lovely one that was a gift from Alyssa. This place turns old books into sketchbooks. The inside has both blank paper and some pages from the book, which I like very much to quell my vandalizing urges. They're really sturdy, too.
So far, I've drawn some things in it:
TV things all over the place. Sherlock dudes in the lower left, Fringe family sort of in the middle–I'm almost grateful Peter doesn't look quite right, I could draw him all day. A few things in here are things that have or will become more finished pieces, like that Doctor Who in the upper right.