I played the old, old Jetpack shareware again at the beginning of the year. I was quite surprised to discover that the original author has finally begun work on Jetpack 2, with a playable demo.
They're promising many, many tiles, but from the looks of it levels will still have that blocky tiled look (which I'm not a fan of, actually). Not so sure about the Jetpack guy redesign either - the original guy's blond (?) head (or is that a helmet?) always gave it some style. Still, some quality work has already gone into this one.
Some further information from the demoscene here.