Re: Lightroom 3
...where do you stop with the lightroom and move on to other programs?
I use Adobe Camera Raw (which is the predecessor to Lightroom and comes w/ Photoshop and Bridge). Generally, these programs are great for most photo adjustments because they are non-destructive (don't distort pixels). In particular anything that falls under the Basic/General category such as White Balance, and correcting tone and contrast issues.
Anything beyond that, and I import to Photoshop: cropping/resizing, fixing blemishes, applying actions, etc.
But that's just me. I've used Photoshop for a very long time and am comfortable with it. Lightroom has actions/presets for applying different "looks" to photos just like Photoshop does. To me, Lightroom is just something else to buy that doesn't offer anything that I can't already do. That said...if I were just starting today, I would probably opt for Lightroom because it's much easier to use and is a heck of a lot cheaper.