To say Joomla is the best is not fair for other CMS users. Altho Im an avid supporter of Joomla, I also believe the Drupal has more flexibility and edged Joomla in ACL issues.

Hm.. what I use eh?
For The Malay College of Kuala Kangsar - Home, Alumni Fakulti Alam Bina, Universiti Malaya - Home, The Malay College Class of 2004 - Home


Component
User Management / Profile: Community Builder
Blogging Tools : MyBlog (commercial)
SEF / SEO Tools: Modified sh404sef
Forum : Fireboard
SiteMap : Joomap
Document Management : DocMan
Event Management : JCalPro (commercial)
Comment System : JomComment (Commercial), i worked there once. =)
RSS / Feed Management : BuildIn.
PMS : Clexus (commercial), no longer available after Joomla GNU/GPL annoucement
Newsletter : LetterMan
Gallery : PonyGallery
Video : Seyret

Modules
User View : CB Super Thumb
News View : Mini Frontpage
Other custom modules

Mambots
Disable Core Registration Force CB : Disable Core Registration
AllVideo
Clexus
SuperLog
JomBackup
JCE
josobfuscator
josreplace

*we are developing a custom profile component for Joomla 1.5 which will be implemented in a new MCOBA - Home.
*some of above configurations are also for Komuniti Joomla Malaysia - Joomla-My

For my blog, f.u.q.a.h.a - Where Every Line has a Meaning - Home
I just use default Joomla installation with a few basic modules + JomComment + DocMan + Allvideo.


=)