There are just so many! But one that should definitely make the list (and one that no one should be surprised that
*I* would want to see there):
ROGER: "Someone's got to tell him what a cheap, insufferable pig he is!" (re: Jeb in Episode #960)
But here are several of my other favorites:
BURKE: "I spend each day killing infants." (Episode #7)
DAVID: "In this house nothing is impossible." (Episode #90)
LIZ: "Tears are only good for watering cabbages." (Episode #156)
LAURA: "And from the ashes, the Phoenix is reborn." (Episode #191)
BARNABAS: "Members of my family tend to look alike." (Episode #243)
JASON: "She's marrying me because of my character." (Episode #269)
JULIA: "I think I've learned everything." (re: Barnabas in Episode #288)
JULIA: "I've been waiting for you for so long." (re: Barnabas in Episode #291)
DAVID: "Dead people just don't walk away." (Episode #306)
BARNABAS: "He clings to life with a leechlike persistence." (re: Willie in Episode #326)
BARNABAS: "Loathsome I am and evil, but leave my pain alone." (Episode #341)
BARNABAS: "I would never do anything to hurt my own flesh and blood." (Yeah, right!
Episode #350)
ANGELIQUE: "Your roads, Monsieur - pig stys the Countess calls them." (Episode #368/369)
ANGELIQUE: "I shall make you a devoted and obedient wife." (Yeah, right!
Episode #390/391)
BEN: "The dead can't come back to life." (Episode #406)
DR. LANG: "I have a certain interest in bizarre medicine." (Episode #466)
CASSANDRA: "I have my little tricks." (Episode #474)
PROF. STOKES: "Let's not waste time eulogizing me." (Episode #510)
NICHOLAS: "I don't have little vices." (Episode #522)
ROGER: "I've always been at a loss in understanding women." (Episode #547)
ANGELIQUE: "Death and I are old friends." (Episode #581)
JEFF: "Is there a law against opening your own casket?" (Episode #625)
TRASK: "The Collins familiy is a very strange family." (Episode #809)
PETOFI: "Aristede is an intellectual gnat." (Episode #841)
PETOFI: "My last aide-de-camp decamped." (Episode #843)
JULIA: "What else have you had, Barnabas?" (Implying he may have attacked someone in Episode #963)
WILLIE: "History isn't supposed to be a pack of lies." (Episode #972)
ANGELIQUE: "From tycon to lackey - my how the mighty are fallen." (re: Sky in Episode #974)
PT CAROLYN: "If I make her whirl in her grave, so much the better." (re: PT Angelique in Episode #975)
PT QUENTIN: "Stop that screaming and come down here." (Episode #986)
PT WILL: "What would the local society editor think if he knew the former Carolyn Stoddard has become intimate friends with a vampire?" (Episode #989)
PT CYRUS: "Coming back from the dead is not a trick." (Episode #990)
PT BRUNO: "Now, if you'll excuse me, I was entertaining someone very important - namely myself." (Episode #994)
PT YAEGER: "You're like a dog - you have to be hit to learn." (re: Buffy in Episode #997)
JULIA: "If I thought I could join him, I would stay here forever." (re: the PT room and joining Barnabas in Episode #1007)
PT ANGELIQUE: "There's always violence in love." (Episode 1014)
PT ANGELIQUE: "The idea of the occult bores me." (Episode #1026)
PT BRUNO: "Cyrus? The mouse with the M.D." (Episode #1036)
LAMAR: "My father was an emissary of the Almighty, sent to strike the cloven hoof from this wretched village!" (Episode #1121)
BARNABAS: "You gave me a thousand nights of agony!" (re: Angelique in Episode #1131)
EDITH: "Snuggle up next to your hot water bottle." (to Gabriel in Episode #1186)
GABRIEL: "Married to a pig!" (referring to Edith in Episode #1190)
PT JULIA: "We should burn this house - burn it to the ground." (Episode #1199)
PT CATHERINE: "When are the people in this house going to see their misfortunes aren't all caused by some evil spirit?" (Episode #1211)
PT CATHERINE: "Who could be happy in this house?" (Episode #1214)