I had several that were really bad, but there are a couple of "How can it be this bad?" guns.
Worst by a mile, AMT Back-Up .45. So stiff a trigger, my finger would be dead and it would have a huge dent in it after firing one mag through it. The local gunsmith guessed 35 to 40 pounds! He got it down to about 18 or so after cleaning up the guts. I guess if you were in danger, 18 pounds would be fine.
Weirdest: HK VP70Z Well, it did shoot OK.
Crunchiest: FEG P9R. It was super stiff on DA, but on SA it had a definite "Crunch" noise. I decided to open it up and see what I could do, so I borrowed a friend's identical, but smoother triggered gun as a reference to put it back together and cleaned up an amazing amount of burrs and roughness, along with taking the sharp edge off the trigger which cut my finger. It came out pretty good, and after shooting it, a neighbor bought it and he really liked it as a "truck gun".