I never had to bother about the technicalities of the actual recording, but I have had some pretty bland voicetracks I had to do the animation for. The one tip I can give you - don't have your voice actors read their lines aloud sitting on a chair - they need to actually ACT OUT the scenes. body language and all, to come up with a believable delivery of the dialogue, with all of the necessary accents and pauses for the animation - and believe me, there is a huge difference between the two methods. If you hit the good and clear accents in the dialogue with fitting head and body accents half of the job is already done; the pauses in the dialogue are vital for showing the character's thought proces; most characters think before they speak, unless they are forced to think something up on the fly. Show the thought process by animating the matching facial expressions, preferably during the pauses in the dialogue - but you can only do that if the voice recording leaves room for that sort of stuff.