The voice actors that I know best and that I can recognize are mostly people with regular parts in Gintama because that's the first show that made me pay attention to voice actors and it's super long so I had a lot of time to get accustomed to them.
So people like Sugita Tomokazu, Rie Kugimiya (though I have a hard time recognizing her because I've seen very few anime she's in), Kazuya Nakai, Ishida Akira (
listen to this), Suzumura Kenichi, Koyasu Takehito.
I also think Miyano Mamoru is cool and has great range but out of the ton of things he's done I haven't seen that many (just FMA, Ouran, Drrr and Soul Eater and I was looking at a list and omg I can't believe they got him just to do Suzuki in Gekkan Shoujo). I also like the sound of Morita Masakazu's voice and I have a thing for Romi Park ever since I watched FMA and loved Edward's voice.
I don't know any English voice actors because I'm too much of a weeaboo to watch dubs and I don't