Recommendations to others considering Crucible:
If you are using DVCS such as git and mercurial, you should consider using Bitbucket and pull requests instead. But if you are still using SVN, then Crucible is the tool for you. Review collected by and hosted on G2.com.
What problems is Crucible solving and how is that benefiting you?
Running code reviews for code changes, setting up workflows to ensure certain changes (or all changes) are reviewed before changes are released. Catching bugs early in the process rather than after the product is shipped. Review collected by and hosted on G2.com.