I mean, how many people have you had watching Lost? People that previously didn't know about it, or even hated or simply didn't find it was worth watching, and that now, thanks to your reasoning, is a fan? I myself have one single true conversion. She has been a Lost fan since the first time I told her about it. There is also a guy who didn't like it and now watches it regularly, not directly because of my advice but I have a part in it.
I've been also trying to convice a girlfriend and other people to watch it, but to no avail, and I'd like to know if anyone else has been successful and what are the best arguments to use.