MuslimMatters had a good article recently on the whole Doritos chips ruckus about animal rennet. I found it to be mostly thorough when it came to explaining their stance on why Doritos are still halaal despite the inclusion of animal rennet during the manufacturing process. 

Being a thorough and researched article, its a bit long but definitely clears up many doubts people have.  Read it here: Of Mice and Men - the Cheese Factor

Hat tip: Thanks to Anes for the link.Â