Battlestar Galactica Razor. After which season should I watch the it have seen seasons one through 2.5 and am awaiting coming DVD release of Season 3.?

You should watch Battlestar Galactica: Razor after Season 2 of the reimagined Battlestar Galactica series.

Here's why:

* Chronologically: Razor takes place between Seasons 2 and 3. It's a prequel to the events of Season 3, focusing on the character of Admiral Cain and her backstory.

* Story spoilers: Watching Razor before Season 2 would spoil some major plot points and character developments from that season.

While Razor is a great addition to the overall story, it's best enjoyed after you've seen the events of Season 2 unfold.