Fantastico DeLuxe will allow you to install over 50 scripts instantly. To use fantastico you will just login to their control panel click fantastico, and then click one of the 50+ scripts to be installed.

Image Galleries:
4images Gallery (website)
Coppermine Photo Gallery (website)
Gallery (website)

Blogs:
b2evolution (website)
Nucleus (website)
pMachine Free (website)
WordPress (website)

Portals/CMS:
Drupal (website)
Geeklog (website)
Joomla! (website)
Mambo Open Source (website)
PHP-Nuke (website)
phpWCMS (website)
phpWebSite (website)
Post-Nuke (visit site)
Siteframe (website)
Typo3 (website)
Xoops (website)

Customer Support:
Crafty Syntax Live Help (website)
Help Center Live (website)
osTicket (website)
PerlDesk (Commercial, needs license) (website)
PHP Support Tickets (website)
Support Logic Helpdesk (website)
Support Services Manager (website)

Discussion Boards:
phpBB2 (website)
SMF (website)

E-Commerce:
CubeCart (website)
OS Commerce (website)
Zen Cart (website)

FAQ:
FAQMasterFlex (website)

Guestbooks:
ViPER Guestbook (website)

Hosting Billing:
AccountLab Plus (Commercial, needs license) (website)
phpCOIN (website)

Mailing List:
PHPlist (website)

Polls and Surveys:
Advanced Poll (website)
phpESP (website)
PHPSurveyor (website)

Project Management:
PHProjekt (website)
dotProject (website)

Site Builders:
Soholaunch Pro Edition (Commercial, needs license) (website)
Templates Express (website)

Wiki:
PhpWiki (website)
TikiWiki (website)

Other Scripts:
Dew-NewPHPLinks (website)
Moodle (website)
Noah’s Classifieds (website)
Open-Realty (website)
phpAdsNew (website)
PHPauction (website)
phpFormGenerator (website)
WebCalendar (website)