If you read just one piece of commentary today then it should be the one titled "Ditch Speaker Martin, make Vince Cable Chancellor and freeze out the Tories... is this Brown's masterplan for 2009?" by Peter Oborne in the Mail.
I will say this, it has an air of possibility about it, although I am a little sceptical about whether a tribalist like Brown would really go for such a high profile coalition. Of course, if the Tories were merely the largest single party in Parliament but had no overall majority he might.
The interesting thing that Oborne points out though is that there is a significant split developing in the Lib Dems. Vince Cable went "off-piste" apparently with an unauthorised arse-licking piece about Brown, and essentially the Orange Book right-wingers in the Lib Dems aren't particular happy about it.