As someone with a lot of stress caused by a spinal injury 10 years ago and now struggling with clinical depression as a result, I have found Leela really very helpful. The relaxation and Meditation section in particular. It actually follows so closely with what the CPN was getting me to do, with breathing exercises that when she saw it she advised me to continue using it. The instruction led meditation is very effective and has helped me to lower my levels of anxiety.
Leela is not all about meditation. There is a kind of game section to it as well. This is not like any other game you will have found on the X-Box and is more spiritual than anything I guess, but I found the game part of it quite helpful too because it offers me gentle exercise. This is something other titles only touch on in passing, or don't do at all.
What I am saying about Leela is obviously chalk and cheese to the previous reviewer, but maybe they had different needs to me. If you are a person with health issues and want to be doing some form of exercise, but find normal modes of exercise to difficult this may be worth considering. Leela is a package that is quite odd when you first start it and in many ways seems stereotypical of far eastern mediative philosophy, that some may still decide is not for them. However, many health services in the UK are turning to these types of therapy, so there is plainly something in it.
I recently responded to a conversation about Your Shape: Fitness Evolved 2012, where someone had argued that exercise has to be hard to have an effect. This is totally inaccurate and Leela is a package that offers exercise for those of us that are severely challenged physically but are not ready to give up totally. I now use Leela most days and believe that I am seeing positive results from it. Even though I am using it most days I think I am still only scratching the surface. When you have mobility issues everything runs to a different time table :o). I like Leela a lot and I think it's something that will appeal if it's given a chance.
Finally I will just say that there are other ways of achieving what Leela does and they may be a bit cheaper, but in the technology hungry community we have, something that does this on your TV screen and is interactive will appeal to many.