There are great options in the In home workout market.  Beachbody has the 10 Minute trainer series that is extremely effective and uses resistance bands along with specific exercises to combine the cardio and resistance training benefits.  The idea of course is to do more than one 10 min. session per day but 20 - 30 minutes per day 5 - 6 dyas per week is a great way to get yourself in shape and able to do more if you want.

http://tinyurl.com/10-Trainer

I also like ChaLEAN Extreme.  This is a lean muscel building program that is very effecient.  About 30 - 40 minutes per day 5 days per week is all you need to build muscle, reshape your body and burn fat.  I was able to lose about 33 pounds on the program and built significant muscle tone and shape.

http://tinyurl.com/ChaLEAN-Xtreme

Do not cheat yourself.  Getting in shape will atke effort but these programs make it more effecient for you. Also working out at home save a HUGE amount of time since you can just GO! and do it anytime.

Hope that helps!