Note that these are all examples from dubbed versions of anime, not subbed.
Yuki Nagato from "The Melancholy of Haruhi Suzumiya" is voiced by Michelle Ruff, who also voices the english version of Chi from "Chobits". Crispin Freeman voice actor for Kyon, the protagonist of "The Melancholy of Haruhi Suzumiya" also plays Hideki Motosuwa in "Chobits". Another reason that one caught my attention was how the 2 characters in these anime's seem to be so close to each other, and how Yuki is a "Humanoid Interface", and Chi is a "Persocom", somewhat similar roles. Yet another example, in the dubbed version again of these two anime's is that Wendee Lee plays the voice of Takako Shimizu in "Chobits" and Haruhi Suzumiya in "The Melancholy of Haruhi Suzumiya". And even yet another example of these 2 anime's, the "Peep Show" manager in "Chobits" and the leader in the "computer club"(?, can't remember if this was the exact term they used?) Dave Wittenburg. Anyway, yes, listen carefully and you will find it is the same voice actor.:). Also last but not least, Kari Wahlgren voiced Kotoko from "Chobits" and also Kyon's sister and Tsuruya-san in "The Melancholy of Haruhi Suzumiya" There are many other examples from other anime, these were just some examples off the top of my head.
Well, there's your "anime 101" for the day!:) Hope you all enjoyed!:D