Anything with a run time of less than 20 minutes, and has 3 or more episodes is on this list. Including DVD/TV specials for longer run-time shows. The list is ordered with stand alone shows first. So, if you're looking to buff your anime numbers...
From both in local TV and cable TV:
A Little Princess Sara
A Little Snow Fairy Sugar
Ah! My Goddess
Ai to Yuuki no Pig Girl Tonde Buurin (Super Pig)
Akazukin Chacha (Red Riding Hood Chacha)