4. Tommy Gavin (Rescue Me)
Tommy Gavin is a great firefighter, one of the best Engine 99 in NYC has to offer. However as dedicated as he is to saving the lives of strangers, his problems with drugs and alcohol leave him just as devoted to destroying his family. If you’ve seen Rescue Me (and you should!), you know the score– Tommy loves his kids absolutely, but his hard-living, hard-drinking ways not only distance him from his wife, but eventually start to rub off the same bad habits on his kids.