Personally, I don't think ADV's original dub stands up at all, but Funimation is dubbing it now, with the only returning VAs I know about being Shinji and Misato's. I wonder how it'll turn out.
Meanwhile, in Bizarro land, Captain Bright has a ridiculous British accent.
Even worse is Haro, who manages to speak properly!
Feel free to compare that to the original version:
The Gurren Lagann dub premiered for the first time on Sci-Fi tonight...
The short and simple of it? It's not so bad.