With the introduction of Minecraft Java 1.4.3, they added the F3+B functionality to view all the hitboxes on entities. However, it wasn't perfect. The player hitbox renders too high. This can pose a problem for my main instance as well, as it is within this version range.

Even around 1.7, the visuals for the hitboxes changed, but the player hitbox was still centered too high.

The bug was eventually fixed in snapshot 14w06b. Excuse the Steve skin in this screenshot.

Relevant Minecraft bug report: https://bugs.mojang.com/browse/MC-4077

Here are some other perspectives!

People in my Discord server really like this little guy so a few of us built him! I found that snow was the easiest white block to get since you can gather snowballs very quickly using a snow golem trapped in a one-block space. This allowed us to get the materials needed in about an hour.

Some other screenshots:

A progress report screenshot I took. The schematic file also appears here, which we used as a reference.

Sunrise shot. Looks awesome, especially since I had no shaders on!

The second screenshot I took upon completion; the first was at night.