It's getting pretty difficult to distinguished what's been 'shopped' and what's been untouched. Regardless, Photoshop is a powerful image creator/editor for professionals, students, and the curious creative, with many of its most useful features not evident at first glance (or second, third, or fourth!). Knowing what's what or how to achieve certain effects might just be a tutorial or two away...
One of resources to learn about the numerous tools is Tutorial9's Photoshop's Toolbox series. The site details about each toolbar feature, with sufficient detail about its use, while also explaining extended capabilities. Without being overly technical or dumbed down, Tutorial9 strikes a good balance between beginner and beyond.
A good place to start for beginners is Photoshopstar, which has tutorials written with a simple to follow, step-by-step format. Even if you don't find exactly what you're setting out to do, there are plenty of fun projects to try out. Sample projects provide full instructions, even download links to the images used so you can follow along. Personally, I found the Separating Complex Objects from Background piece to be particularly insightful for my own improvement in PS.
Call us shallow but if a site teaching Photoshop basics doesn't appeal visually, we're prone to write it off. But Photoshop Lady obviously knows her stuff, since the site really draws you in designwise. Photoshop Lady specializes in artistic designs, paintings and graphics, with current stying how-to's described in detail; for example, the Tron Light Text Effect. For those with a flair for painting or illustration, Photoshop Lady's tutorials are an excellent resource.
Planet Photoshop not only provides tutorials but also has the latest news on Adobe products, Wacom tablets, and affiliates well versed in the world of digital illustrations. As well as news updates, the tutorials themselves are in-depth, leaning toward the professional end. A noted example: 3D Reflections on White delivers not only what it advertises, but good advice along the way.
They say that a jack-of-all-trades is a master of none, but sometimes getting a diverse pool of submissions means there's more to learn from. Entheos pools submissions revolving around the whole Adobe Creative Suite, and is a useufl source for ideas for website, logo and graphic design examples. Visitors can delve into Photoshop projects, alongside Dreamweaver or Flash. Just note, the site caters to more advanced users, so those who don't know their paint bucket from Bezier curve, beware!