Seriously though, ignoring my Moreism which only a select few will get (not forgetting you this time, Speirz) and the fact that I couldn't resist but vote for SS, I'd have Murali from the options listed. As has been noted, a good bowler will have much more effect on a match than a batsman of equal quality. Even ignoring the fact that a good batting team with poor bowlers will bring draws while a good bowling team with poor batsmen could well bring wins anyway, a good bowler will generally be much more reliable than a good batsman anyway - a top class bowler will bowl well much more regularly than a good batsman will score heavily due to the fact that a batsman can be dismissed cheaply after just one eatly mistake. There's also the fact that the number of batting resources in a team is higher than that of bowling resources, so a good bowler is making up a larger percentage of high quality in a side than a good batsman.
A much harder decision for me would be a poll consiting of Kallis, Pollock, Murali and Flintoff. Starting a team from scratch, a top class allrounder like Kallis, Pollock or Flintoff could well be more valuable than a genuinely top notch bowler - especially players like Pollock and Flintoff who are world class bowlers in their own right. I'd have probably still gone with Murali, but it would have been closer.