I suggest you have a look to 12F683. Really nice one for a 8 pin device, PWM, A/D, Comparator and much more codespace.

16F88 is also a nice one. Nice replacement for the 16F628

16F88x are nice as well... OH well, hard to find my favourite... i had 50-60 different model before in stock. And Microchip seems to release a brand new model each week.