when you're on Google, searching a term, and it starts suggesting terms, I get kind of annoyed. Usually, whatever I'm looking for, if I've resorted to a Google search, is on the obscure side. My last two searches: the origin of the title of The Name of the Rose, and what decade the William Brothers originally sang Hold That Tiger (Tiger Rag).
And Google tends to offer the most popular search results (The Dark Knight and Tiger Balm, respectively) before I've finished typing, which is a little irksome.
Don't get me wrong: Google kicks @ss, and I love most of their services (especially the image search, and the way they correct your spelling when you goof-up). But I wish it didn't "suggest" things while I'm talking.