First up, Conservative David Cameron, who has supposedly been running scared of being interviewed by J.Paxman.
Here on BBC iPlayer:
http://www.bbc.co.uk/iplayer/episode/b00sb34t/Jeremy_Paxman_Interviews_David_Cameron/ (http://www.bbc.co.uk/iplayer/episode/b00sb34t/Jeremy_Paxman_Interviews_David_Cameron/)
I'd guess highlights will appear on Youtube.
BBC news item here:
http://news.bbc.co.uk/1/hi/uk_politics/election_2010/8641091.stm (http://news.bbc.co.uk/1/hi/uk_politics/election_2010/8641091.stm)
In my view, these interviews will be more informative than the leaders debates.
Yeah, I imagine they will be too, but the debates will get more viewers.