hcarter - I have done the late extract additions in the boil before, but a good suggestion none the less.
Yooper - they vary from a recipe you find or just brewing a straight kit. A typical one for me is:
Pale Ale
6lbs Gold LME
8 oz Caramel 10L, 8oz Carapils mixed
Hops 2oz Perle - Bittering, 2oz Cascade - Aroma
White Labs California Ale #WL001 vial
I put about 3 gallons of water on the burner.
Bring up to 155F and steep grains for around 20 mins or so. Remove bag without squeezing, just letting it natural empty residual water.
Add LME (or DME if the recipe has it) and dissolve.
Bring to boil
Add bittering hops
Boil 60 mins (sometimes less since it is extract, etc)
Add Irish Moss last 15 mins
Add aroma hops last 10 mins
Cool with wort chiller
Put in fermenting bucket with yeast, add more water, etc.
Ferment for 2 weeks in primary
Keg and start to carbonate with CO2 in cooler
Sometimes I secondary if I need to free up some primaries, but most of the time not.
Your typical, boring extract brewer. And let me restate that I am not creating "bitter beer". It is just when I taste all of my beers there is a slight lingering bitter taste in the back of the tongue that makes me think, "huh, I wonder why all my beers have that slight aftertaste."
I think "off-tastes" are the hardest to describe on boards, but I thought I would explore this with those who brew more than I.

Thank you for your time, YooperBrew.