Need some slideshow help

I am making a sappy-ish type of slideshow, and I am looking for a song to use in the background. I haven’t found one that I like enough yet.
Does anyone have any ideas?

background: This is for the rehersal dinner before my wedding this weekend, so there are all kinds of pictures of us growing up with our families…
I am looking for something sentimental, but not too cheesy…

Thanks…

There’s a few simi-sappy songs here:

http://www.amazon.com/exec/obidos/ASIN/B000002VDS/qid=1088057244/sr=ka-2/ref=pd_ka_2/102-4422321-8650569

What a Wonderful World, sung by Louis Armstrong.

Or, to give it a slightly less shopworn twist, “What a Wonderful World” as sung by Victoria Williams. Her voice gives the song a fresh joy; makes it more emotional, IMO.

A common theme for a lot of semi-glurgy slide shows seems to be Only Time by Enya.