You probably remember 28 Days Later, a well made flick set in Britain just after an apocalypse caused by a virus turning people into rather vigorous zombie-like monsters. Then a different director made 28 Weeks Later, which was not quite as great.
Danny Boyle, who directed the first film and produced the second one, has recently speculated that he could make a threequel:
I'd certainly like to, I feel the idea is quite a strong idea, and it could well involve directing it. Yeah, absolutely.
Regarding the premise of the third part he said:
There is an idea for a third part, but I haven't really done enough about it yet. (...) But I've got an idea for it, so I
can't really tell you any more than that at the moment, but hopefully
that might happen.
I'll definitely keep an eye on this. 28 Days Later was enjoyable, and if you take into account that Boyle is also responsible for Trainspotting, Sunshine and Shallow Grave, there's a good chance that he makes something worth watching again.