The thing is, I've been like this most of my life. After being knocked on my ass during my early teen years due to an illness, I basically laid around the house in pain/exhaustion. Once I recovered, though, I continued the same habits. Sit around and do nothing except read, watch TV, and play video games.
I lost some weight in college, but afterwards I fell into my old habits again and ballooned up to 240 pounds and a size 40 waist.

So I talked with a dietician and my wife (who is a nurse and knows at least more than your average Joe about nutrition and exercise) and I've put together this little plan. Its sort of rough, but I'm just outlining the basic ideas and will refine them further on in.
Diet:
-No soda of any kind (The killer for me, sometimes I'll have 5 cans of coke a day)
-No fast food (Not really a problem since I rarely eat out)
-No dessert foods (Again, nothing big; never ate much of the stuff anyways)
-less grains and carbs (Another killer because I'm used to snacking alot)
-Lots more water
-More meat, more veggies, the standard stuff
Exercise:
-Brisk walk/jog every day for 20-30 minutes (I fucking hate running.)
-Swim hard and fast for as long as possible 5-6 days a week (I don't want to set any lap limits/etc until I know my endurance, but I will be swimming alot as it is something I used to really enjoy, and still do. Plus it won't put nearly as much stress on my joints as running will)
-Weightlifting 3 days a week
-Various cardio workouts at the gym
I'm not too worried about the diet part; as long as I don't do the grocery shopping I won't miss anything. Its only when that food is in the house that I get cravings.

But the exercise part concerns me. I have a chronic lack of energy, especially in the mornings, even if I get a full night's sleep. I'm worried that when the time comes to get out of bed and head to the gym/pool I'll feel so tired that I'll end up dropping out. And due to my schedule, morning is the only steady time I could exercise. So either I'll end up either changing my schedule (unlikely) or finding some way to get more energy in the morning.
Well, thats that. I'll keep this thread updated every so often, and I'll probably even post some before and after pics if you can stand hideous man-flab.

I hope to lose at least 50 pounds and go down from a 40 to a 32 or 34 by this time next year, but we'll see how it goes. Heres hoping I don't quit after 2 weeks.