I do fill out the W2s, 1099-SA and SSA1099 worksheets.   

W2s have too many different things on them that flow to different places, the 1099SA figures might be able to be entered on the 8889 itself, but its easy to just use the worksheet, the SSA1099 lets you put the medicare ins and fed withholding all on one sheet and it puts it where they go, so its easier to use it that jump around entering those in other places.

I summarize stock sales (ST, LT, covered and not covered, etc) from 1099B on Sch D though, I dont enter each and every sale.  Many people scan and attach the actual 1099B to the return, but I never have.