My favorite use is for face frames. Turns out that what makes the frame square is the acuracy of the 90 degree cuts. I spend some time making sure the sawblade is exactly 90 to the table and use a very acurate sled to make cuts. The screws then pull the frame into the perfect alignment. Someone posted about pre gluing the end cuts, letting it dry, then reapplying glue for the final glue up. I now do that on face frames. For awhile I also trimmed the ends with my Griz miter trimmer, which gave a perfect, almost glass smooth surface. I found that wasn't necessary and just use a good Freud industrial rip blade that gives a glue ready cut.
The more I do, the less I accomplish.