Why would you not be able to boil water in a Pyrex bowl? That's what Pyrex is for. We boil and cook with Pyrex glassware every day and have never had a problem with it. I'm pretty sure it would explode in coach's kitchen, but he has more explosion problems than most folks.
http://www.pyrexware.com/thetruthaboutpyrex/index.htm
But sir, you misunderstand.
I
don't have explosion problems.....precisely because I go out of my way to avoid such situations.
I too use Pyrex glassware for cooking, and haven't ever had a problem, but I can see the situation as our esteemed colleague Lacarnut described it.
Corningware is an excellent product, incuding their line of Pyrex, but sometimes defective goods fall through the cracks and end up in consumers' kitchens.
When I was in college, and worked for a wholesale hardware distributor, we used to deal with Corningware and Pyrex in railway freight-car loads, hundreds of thosands of glass pots and pans. There was an occasional complaint about a defective item--but on the whole, it seemed the products were 99.9999% good.