I've checked the Wiki and the only one I seem to be missing is maybe some of Trevor's bountys, if they count. I can't even get the next one up, it's not in my e-mails any more. What do? And does anyone know the others I might be missing?
Have you gotten all the collectibles? A couple of the S&F missions don't unlock until you complete certain categories of collectibles. Also have you done all the parachute jumps? There is one Dom mission that doesn't unlock until you do.
I have walked across the surface of the sun. I have witnessed events so tiny and so fast they can hardly be said to have occurred at all...
The nuclear waste things aren't required for 100% anyway, so that wouldn't be it. Bounties are not needed either. I also lost my email telling me where the guy is, if you wait too long the emails auto-delete as new ones come in. Afaik you can't get Maude to send you another, so look it up the location online.
You get two more S&F missions after collecting the 50 scraps and 50 spaceship parts. And like said, do the parachutes for Dom. A lot of people are missing the last few Tonya missions. Call her for the remaining tow truck jobs.