In Arena, Daggerfall, and Oblivion, they were human-like.
Morrowind was the only game where they were beast-like.
True, and that's why I think Morrowind handled this best out of the currently released Elder Scrolls games. Will Skyrim do better? We'll see. I liked the way Morrowind handled Khajiit and Argonians, it really helped to stress that they were races very different from the other ones in the setting. Not just like humans and elves except with different shaped heads. In Oblivion, while the quality of the character models obviously improved, in terms of design, I felt that the Khajiit and Argonians lost some of their uniqueness, and with it, their appeal. In the podcast, though, Todd Howard did say all the races would look more distinct, so I'm hopeful that Khajiit and Argonians will get back some of their uniqueness, still, Bethesda has yet to back that statement with actual in-game images, this may be because they're doing something really impressive with the races, so they want to save it for a surprise later on, but I'm still slightly worried that it might instead mean that they don't have anything to back the statement with, and that it was just empty hype.
Not entirely true, in one of the Hub videos, we can at one point see concept art of a figure that appears to be an Argonian, but the image is too small for us to make out many details, so it's not very helpful, and since it's concept art, there's no guarentee that the actual game will look just like that.
http://www.elderscro...edguard/p15.jpg
Probably not the best example, seeing as the image is not from Morrowind at all, or even in-game. If we're going to talk about how they were in Morrowind, it would be better to post screenshots from Morrowind, an example of the Morrowind Argonians would be http://images.uesp.net/b/bb/MW-npc-Skeetul.jpg. And Khajiit looked like http://images.uesp.net/3/3f/MW-npc-AjiraFull.jpg
Keep in mind that these screenshots are both images from unmodded Morrowind, of course, so the graphics quality is obviously not very good by current standards. In Skyrim, they'll obviously look better, no one is saying they should reuse the same models, just that Bethesda should go with Morrowind's route of making the Khajiit and Argonians distinct from the other races.