I found it! I fucking found it! *laughs manically* Yesterday, I was eating dinner with Rick and we started talking about how ABC used to have good shows and TGIF, which sparked a tv show memory. I was like do you remember this show where this teenage guy dies and then he's his best friend's guardian angel? Rick's like yeah! But I didn't believe him until he brought up the fact, that I completely forgot, that this kid ate something old under his bed that killed him. lol!! So, I had an inkling that this tv show was called Teen Angel or something like that and guess what? That's what it was called and I found it on Wikipedia. This entry probably makes no sense but I am so giddy right now. Hahahahahahaha!!! I can't believe I found it. Okay, calm down and breathe...
http://en.wikipedia.org/wiki/Teen_Angel_%28TV_series%29