CONVERT DATETIME seems all right, but still ...

A table with a varchar column that has date and other value types too.
A query with a simple CONVERT DATETIME

Conversion failed when converting date and/or time from character string.

Crashing. Over and over again. I start to call it X-Files.
Until I read THIS.

Not only I know why it happened (and sortof feel like SQL is "stupid" :D) but I get an interesting idea to work around the issue.