[itaxim]

If you are going to start from the recent stuff, it makes sense to start from Season 1 of nuWho, starting with the ninth Doctor.

That season was kind of designed to fill you in on stuff. Not quite as good as Season 2 or 4 but still better than 3. I guess that's not hard though.

Also if you are a completionist, this way you get the "full" run without watching hundreds of Ye Olde Doctor Who.