Shark Bite plumbing connectors! Instead of soldering or glueing connections you just push them together and, PRESTO, you have a perfect seal! I kid you not, he has put in many of these over the past week and not once has he had even the slightest leak AND it only takes about 60 seconds to make the connection. Whatever they say about themselves on the link above, it's all true!
They should pay me to advertise for them. I love these things! Heck, even I could do plumbing with these things it's so easy! Next time you have a plumbing job you're going to thank me. you may even kiss my feet, you'll be so grateful.