The WB (ended 2004)
B1x1- The One where Xander finds a Stake
B1x2- The One with the Vessel
B1x3- The One where Cordy can't drive
B1x4- The One where Xander is Hot for Teacher
B1x5- The One where Buffy has a beeper
B1x6- The One with the Pig
B1x7- The One where Darla wears a Catholic School Girl Outfit
B1x8- The One where They're all doomed
B1x9- The One where Cordelia Sings.
B1x10- The One with the Nazi Clown
B1x11- The One with the Sinister Clea Duvall
B1x12- The One where Buffy Looks Nice in the Dress
Buffy S7 ep 22: The one where everyone will get depressed because the show has finished and the final ray of light we can look forward to is watching Angel
Angel S5 ep 22: The one where nothing matters anymore because that final ray of light has been takin out of all our lives and it ends on a cliffhanger...where is the closure...!!!
ps It could also be ... the one where they go to work.
Buffy ep 19 : The one where willow gets blood on her shirt.
also...The one when everyone gets depressed because Tara dies!