On Linux, you may have trouble looking at the galleries produced by Adobe Lightroom as it require Flash 9 even in its basic non-flash form (wierd!), so here are a few sample screenshots to show you what you are missing.

In Lightroom it gives you a choice of two different Flash based galleries and an HTML based gallery. The Flash based galleries won't display on any Linux browser I've seen and even the HTML version (used in this example) gives problems on some Linux browsers.

Since I produced this test gallery, Lightroom has bee updated and the gallery templates have changed a wee bit. The first page is the same as the snapshot on the left, but the intermediate page has gone and the large image page (show at right) has been changed quite a lot. I think the gallery template was better in its original form.