am a big fan of controlled crying. it's horrible for the first couple of nights, but now baby goes down without a whimper and just rolls over and goes to sleep.
wouldn't do it when they're newborn and needy, but when she started sleeping through the night (about 6 mo) but was it was still taking an HOUR or MORE of breast feeding (!after a full formula feed!) to get her to sleep, and I had to put her down so slowly and steadily that she didn't budge (or else would have to start all over again), I had to do something or go mad.
so tried lots of no-cry sleep solutions (she cried anyway). tried staying in the room and patting her endlessly (still crying), lullabies, mobiles, silence, pitch-black darkness, everything, finally turned to controlled crying.
DH hated hearing her cry, so I started on a night he was out. method i used was put her down after usual routine and cuddle (immediate crying), check in 10 mins every approx 10 mins (don't go exactly 10 as they're cunning bairns and will quickly figure that out, so 9 or 11) every 10 minutes for an hour, then every 15 minutes for second hour (if they go that long). When you go in, don't pick them up, just rub their back, but not for longer than 2 minutes altogether (or else they wake all the way up). They will increase the volume as you leave, but don't give in, or else you'll prolong the misery for everyone.
After the first night (7 entries), she went down to about 4 entries for 2-ish weeks (so an hour to get her to sleep, which is what it used to take anyway), then after that it quickly got to the stage where she'd just roll over.
I know that there'll be a bunch of MN'ers on here who'll be SHOCKED that I left my child to cry for an hour or more, but I didn't! it was 10 mins at a time! and it really, really was that or my sanity. plus it was a rage cry, rather than a sick or frightened cry, which would have had me straight in there, picking her up.
So, good luck. whatever you do, if you go with this method, persevere and stick rigidly to the routine, because otherwise you'll have to start over and you'll have put her through it all again. and turn up the telly for each of the 10 minutes.