I'd been dreading this news for awhile... but I only found out today.
Thurl and Paul Frees (Haunted Mansion's "Ghost Host", "Boris Badenov" among many, many others) were my two favorite voice actors. (And because they're both featured in the Haunted Mansion, well, guess what my favorite Disney attraction is...)
It's a shame Thurl wasn't better known than he was... nobody recognizes the name but his voice was one of the cultural icons of the 20th century.
"Oh, now there's a surprise! I could have a heart attack and die from not surprised!"