I suspect that most people will have similar lists of favorites and not many new discoveries will be made, but let's see, shall we?
The only site I visit routinely that I go to from a bookmark or toolbar is Ancestry.com. Most sites I access by going to the address bar, entering the first one or two letters, and clicking on the link as it pops up.
My short list:
• Chronicling America
• California Digital Newspaper Collection
• Old Fulton Postcards
• Wikipedia Online Newspaper Archives page
• Family Tree DNA
• Legacy Family Tree
• Google Translate
• Google Maps
Since I rely primarily on the address bar and not bookmarks or the toolbar, I don't have a second quickie list. Most of my regular sites pop up when I start typing (and I rely on typing because I'm a trained touch typist and that's the fastest thing for me to do).
Now, in my bookmarks, I'm like Randy in that I have hundreds more links. I have one folder named Genealogy that has lots of saved links. As with Randy, these are less used sites, although I wouldn't say I don't use them anymore. It's more that they're for specialized topics, such as research on specific family lines or for other people, and when I'm doing that research I bring them up. I have one folder just for Jewish research. I also have close to 200 links in my general list that I haven't sorted and filed yet, and I know several of them are for genealogy.