There is no mention of Jeeves in the US version:
Ask.com Search Engine - Better Web Search
Edit: It's hidden, but you can get the same thing in the use with different parameters: <never mind>
Edit2: Ok, its really wierd. Now that I've seen Jeeves, I can't get back to the normal version without clearing my cookies. NOOOO!... wait... I don't use ask anyway... never mind.
Edit3: Ok, it seems that if you type in askjeeves.com it takes you to Ask, but permanently puts ask into Jeeves mode, with no obvious way to go back to normal ask without clearing your cookies.