I can pretty much concur with the guesses posted elsewhere so far for the Haruhi voice actresses:
- Kari Wahlgren
- Kate Higgins
- Michelle Ruff
- Stephanie Sheh
- Wendee Lee
I'd have to go with the actress I had a feeling could do a good Haruhi since the speculation started: #1 Kari Wahlgren. Overall, she had the best interpretation of the character. #3 (Michelle Ruff) did a good job, but didn't deliver the "No. Such a thing is just unnatural." line how I felt it should be done. Same for #2 (Kate Higgins). #4 (Stephanie Sheh) was good, but she needed a bit more energy, although I liked her "No. Such a thing is just unnatural." delivery. #5 (Wendee Lee) had the most enthusiastic performance (maybe a bit too enthusiastic), but she sounded a bit too old at times and I didn't like the last "mysterious transfer student" bit.
Plus, Stephanie Sheh is Mikuru and Michelle Ruff is Yuki.
I wonder if we'll hear auditions for the other characters or at least voice clips for some of them. I'm curious as to who will voice Tsuruya-san and how they will translate her unusual speech pattern.