FRINGE

A friend recently convinced me to start watching this series, and as soon as I got a few episodes into the first season, I was hooked. Caught up to the US in about 10 days.
It is based around unconventional "fringe" science that follows a female FBI agent, an (ex)institutionalised scientist and his son. I think it usually shows on SKY ONE on Tuesdays at 22:00, it is currently in its third season.

It has been described as a hybrid of The X-Files, Altered States, The Twilight Zone and Dark Angel.

Anyone else watch it/have an opinion on it?