yea i'd be interested in vids like this too. Sometimes the husband is just in the background for a second, but enough for us to see how much bigger the black guy is.
My wife has only been with two, the first was quite a bit smaller than me, I am a bit over 8 in. The second was about 9.5 or so and she said was 7.5 around which she liked as she likes thickness over length.
Try out the series "Cum Eating Cuckolds" which now comes in Volumes 1, 2, and 3. You can find them on the PPV movie sites, i.e. hotmovies.com. Well worth every penny.... Trust me if you are turned on by that sort of thing, these movies are for you.