I was a best man last year, and just a few days before the wedding asked other mates and family of the groom to email me photos/scanned photos of him from age zero to the present --- then on a drunken evening over much vino in just a couple of hours, I put together a powerpoint slideshow, including doctored pics, well known lookylikeys, a few
accidental 'how did that get in there' type dodgy pics (of the bride), dodgy ones of myself (self-deprecating, and for a good balance) all in chronological order, with the This Is Your Life theme tune embedded at the start (mp3 from TV Cream). My slideshow commentary (i.e. the speech) contained running gags on his facial hair and head hairstyles over the years, his love of crisps and Fosters shandy, regular compliments to the bride, comedy captions, fictional/'controversial' incidents etc.
(to actually address your post....) I started the whole speech with .... [the groom] is one of the kindest people I know, and so too is [the bride], only with less facial hair... (it did get big laughs, honest
).
As for my prepared commentary/speech; as I had got fairly drunk, there was a lot of ad libbing, as I could hardly read, but that actually added to the entertainment, and the audience being fairly drunk/happy generously laughed and clapped which also put me at ease.
The venue had a laptop projector, so it was very very easy to set up.