Did it with both of my boys and it wasn't as "dramatic" as it seemed on TV (maybe because we did it when they were young so they didn't have the bad habits the families on TV had??)
With my eldest, the night we transitioned him to his toddler bed (18 months old), we did our whole bedtime routine (straighten up a little, take a bath, lotion, brush teeth, talking or singing softly as we do, story, prayer, hugs/kisses, turn off the light, close the door). He cried, came to the door and we waited 2 minutes, then picked him up, said time to sleep, and closed the door. He opened his door and stood at the gate (we safety gated his room at first) for a few minutes, then laid down and went to sleep in bed. That was the only time we had to do that. For my youngest, he was 19 months old when we moved to the new house and put him in his toddler bed after the normal bedtime routine. He was very proud and laid down right away (we'd been letting him "peek" on his big brother so he knows big boys sleep in real beds). But maybe 10 minutes later, he came to the door. I let him cry 2 minutes, then picked him up, gave him his paci and special blanky, put him in bed and said "Love, it's time for bed". I walked out, closed the door, and that was it. Silence. But when I went to check on him an hour later, he was sleeping on the floor by the door. I picked him up and placed him in bed, and that was all. But we did watch Supernanny and saw that to be firm early on and not give in is actually the nicest and easiest way to start a habit, so it doesn't have to get all weird and dramatic when they're older. My oldest will be 5 in 2 months, and we still don't have issues with him. My youngest has been sleeping in his big boy bed for almost 3 months and does just fine, though we've learned that if we go on a trip, it's harder to get him down to sleep away from his own bed, unless we bring the pack and play (he's still just 1). LOVE Jo Frost's methods.