Funny name - fantastic software. Fantastico is the name of some software that's built-in to the online control panel. It allows easy installation of a bunch of open source (free) applications for your website including:

Blogs
  b2evolution
  Nucleus
  pMachine Free
  WordPress

Content Management
  Drupal
  Geeklog
  PHP-Nuke
  phpWCMS
  Post-Nuke
  Siteframe
  Xoops

Customer Relationship
  Crafty Syntax Live Help
  Help Center Live
  PHP Support Tickets
  Support Logic Helpdesk
  Support Services Manager

Discussion Boards
  phpBB2
  SMF

E-Commerce
  CubeCart
  OS Commerce
  Zen Cart

F.A.Q.
  FAQMasterFlex

Guestbooks
  ViPER Guestbook

Image Galleries
  4Images Gallery
  Gallery

Mailing Lists
  PHPlist

Polls and Surveys
  Advanced Poll
  PHPSurveyor

Project Management
  dotProject
  PHProjekt

Site Builders
  Templates Express

Wiki
  PhpWiki

Other Scripts
  Dew-NewPHPLinks
  Noahs Classifieds
  Open-Realty
  phpAdsNew
  PHPauction
  phpCOIN
  phpFormGenerator
  WebCalendar

• Online control panel
  cPanel is a web based interface that allows you to control all the important aspects of your hosting accouint such as adding mailboxes, viewing statistics and performing backups.
  
  
• Unlimited email aliases
  You have a limited number of mailboxes, but you can unlimited 'aliases' pointing to a particular mailbox.
  
  
• Unlimited auto-responders
  These are auto replies sent to someone when they send you email.
  
  
• Webmail
  Check and send email via a web page.
  
  
• Anti-spam
  Two anti-spam solutions are included - SpamAssassin & Box Trapper
  
  
• Mailing lists
  Send newsletters or create a group discussion list
  
  
• File manager
  Manage your site files using your web browser rather than FTP software
  
  
• Sub-domains
  Create your own sub-domains such as shop.yourdomain.com
  
  
• Works without 'www'
  Your site works with or without the 'www' part of the address
  
  
• Direct FTP access
  Use standard FTP software to manage your site files.
  
  
• Detailed site statistics
  Improve your site by analysing your visitor's activities.
  
  
• Full CGI/Perl access
  Add custom functionality using Perl and CGI scripts.
  
  
• PHP4 enabled
  Add open source and commercial applications to your site.
  
  
• Extensive Perl plug-ins
  Another scripting language
  
  
• FrontPage 2000 extensions
  Support for those using Microsoft FrontPage as their HTML editor
  
  
• SSH access
  Get raw access to your website
  
  
• Self manage backups
  Backup your site to your hard drive or a remote server.
  
  
• Password protect directories
  Create 'member only' sections of your website
  
  
• IP deny
  Prevent certain users accessing your website
  
  
• Self manage cron jobs
  Create scheduled tasks
  
  
• Self manage HTML error pages
  Create your own error messages instead of the standard 'page not found'.