I've experimented with intermittent fasting for 3 months.
Here are some observations based on my experience. I shoot for about 2000 cals per day. (started at 6'0", 263 lbs. I'm down to 240. I'm still a fat ass, but very happy with the progress.)
1) Having control of your calories is more important than any workout (old adage -- you can't out train your diet).
2) It took about 7-12 days for my body to get over cravings for food at what used to be my regular meal times (breakfast and lunch). After that -- I've found it surprisingly easy to go without calories until well into the afternoon -- on rest days. That still surprises me -- I used to be the type that simply could not skip a meal. I can also do that on training days (the work out usually blunts my appetite) -- but I choose to eat after workouts.
3) It is damn convenient. Not having to always worry about my next snack.
4) I feel very satiated after a "full" meal. Food tastes damn good, when you are really hungry.
5) It worked well for me for the first 3 months -- but has since stalled. I have held still at roughly the same weight for about 4 weeks now. I don't consider that to be without value. It suggests (but does not prove) that I'll be able to maintain a particular weight eating this way. I suspect I need to reduce my calories more, or add more NEPA. The real problem is probably carb-cycling days on the weekend. I tend to go overboard, and smash the 2000 cal limit.
6) For better or worse, I drink more caffeinated beverages. 2 cups coffee is now my "breakfast." Tea and diet sodas throughout the day.
7) I've made reasonable strength gains throughout. 225lbs for reps(5) on the bench, 300 for reps on the dead lift, and 275 squat for reps. Won't win any power lifting competition with these weights, but considering where I started -- I'm stoked.