I picked up one with pepperoni on top and it came with a side of warm marinara sauce for dipping.
I was hoping for some warm, garlic goodness with this one, but it ended up being overdone and slightly burnt here and there.
The garlic flavor was a bit light for my liking as was the butter. I like my garlic bread really garlicky and buttery and Pizza Hut's version wasn't doing it for me.
The pepperoni had those desirable crispy edges and provided much of the flavor for the dish. Pizza Hut's pepperoni is on the thin side but the same can be said of their major competitors.
Update 7/16/12: Pizza Hut sent me a replacement pizza:
The "not dry" condition really did a lot for the flavors. The cheese still misses that stretch that good mozzarella has but imparted more flavor. There was a little bit of sauce on each slice that I didn't notice the first time around and the pepperoni was slightly more peppery.
Most importantly, there was a nice garlicky taste throughout, and the slices heat up real nice in the toaster over the next day (I could not say the same of the first pizza).
On the downside, it didn't have as much crispness as the first, but I'll take less crispy over super dry on my pizza any day.