Hi, and welcome to the forums.
What you see in the "Star Wars" display depends to some extent on how you get there.
If you're on a Finder window for a week-old folder, say, then +Enter Time Machine,+ you can only select backups in the last week; all the earlier backups, that don't have backups of that folder, can't be selected.
Try clicking your home folder, internal HD, or Computer name in the sidebar.
Also note you can see your iPhoto library via the Finder window in Time Machine, but you can't see the package contents or view individual photos. To see the photos, start with iPhoto, then either select +File > Browse Backups+ from the menubar or click the Time Machine icon in your Dock. See #15 in [Time Machine - Frequently Asked Questions|http://web.me.com/pondini/Time_Machine/FAQ.html] (or use the link in *User Tips* at the top of this forum).