Best practice for production servers: To reboot or not to reboot?

[Robert La Ferla]

So now I'll refine my question. The servers that we're using are Solaris and are running various services including Java app servers, NFS, SMTP, and others. 

If a server isn't rebooted on say an annual basis, fsck doesn't get run. Drive mounts that were added but not made permanent won't get remounted. Configuration changes and network changes may affect the reboot. Given this, is it better to never reboot or reboot on a periodic basis.