While everyone is gunning on SreeSanth's behaviour, here is something what English fielders tried when Zaheer walked into bat :-
"....one that occurred just after he'd walked into bat when India were at 464 for 6. So much did the "incident" incense him that he walked up to Kevin Pietersen at gully and brandished his bat menacingly. "When I was batting, there were some jellybeans on the crease, so I chucked one off the wicket.
"When I played the next ball there were again some jellybeans on the wicket. So obviously there was someone throwing it on the wicket, which I didn't like. So I just went upto them and said, 'Guys, what's this all about. I'm here to play cricket.' And they came at me. And I just sort of felt upset. And I just reacted."
Surprisingly Zaheer didn't go after Alastair Cook, fielding at short leg, but directed his ire at Pietersen at gully. "I didn't know exactly from where it was coming," he said. "Maybe I picked the wrong one (Pietersen) but I was just not bothered at that time. I just felt it was insulting. It was definitely from a fielder because if it was placed unknowingly, it shouldn't have come there again when I removed it."
Paul Collingwood preferred to get cheeky when asked about the incident - "I think he prefers the blue ones to the pink ones" - but Zaheer didn't think there was a comical side. It's been a series packed with such on-field action but Zaheer felt England were going one step too far. "We're here to play cricket, that's what we're looking forward to do whole series. I don't really want to go in detail. I'm here to play cricket and enjoy my cricket...."
http://content-usa.cricinfo.com/engvind/content/story/304509.html
Pretty cheap act IMO.