Bad Daddies
Yes, the Lostverse is full of them. The Buffyverse had even more. They're absentee fathers, neglectful fathers, drunken fathers, conman fathers. Here's an interesting article on dads on television, using Lost as the example of the ultimate show about daddy issues. It's not an awesome article -- she mentions no less than three times that Kate blew up her father. But she does nail a lot of them. She misses some others, such as Jin being ashamed of his father; Sayid mentions in passing that he's always living in the shadow of his father; Sawyer's father killed his mother and then killed himself (that's a big one to miss); Charlie's father was a harsh butcher who told Charlie he was wasting his life; Shannon's father marries a witch of a woman who becomes Shan's evil stepmother. God only knows what Ben's father was like.

The rest of the article talks about some other shows -- for Heroes, she mentions HRG as the evil dad. She doesn't talk about Chandra Suresh or Hiro's SERIOUSLY evil father. Buffy and Angel would have been a good shows to have mentioned: Buffy's father abandoned his entire family to run off with his secretary; Xander had an abusive father who was an alcoholic; Angel's father kicked him out of the house and onto the streets, where Angel became a vampire; Wesley's father was a brute -- in fact, MOST of the characters on these two shows have some sort of daddy issues (or in Spike's case, mommy issues).

But it's an interesting article nonetheless.