HI Alex,
I have just completed the Galaxy and Cosmos unit at Swinburne as part of my graduate certificate and it is well established that the BB theory has problems. The only reason it is still there is that there is no other theory that fits all the observational evidence (or even comes close) - but there is certainly no proof.
The other side of the coin is that Cosmology is being questioned as an actual science (not the observational side - just the theory. There was an interesting paper published on the matter which many observational cosmologists revisit every now and then to put it all into perspective.
What I do find interesting is that there are 'scientific' groups out there who try to re-interpret the observational evidence in an effort to discredit the BB theory rather than trying to find an alternative theory. Without an adequate alternative theory the best they can hope to achieve is to have the BB theory modified.... but I fear we are getting off the original subject of this thread
Cheers