List examples of custom field types?

Hi,
Examples of Custom Field Types are:
AutoNumber : Automatically assigns a unique number to each record. The maximum length of any auto-number field is 30 characters, 20 of which are reserved for prefix or suffix text. Not available for external objects.
Checkbox : Allows users to check a box, indicating a true or false attribute of a record. When using a checkbox field for a report or list view filter, use “True” for checked values and “False” for unchecked values. The Data Import Wizard and the weekly export tool use “1” for checked values and “0” for unchecked values.
Currency : Allows users to enter a currency amount. The system automatically formats the field as a currency amount. This can be useful if you export data to a spreadsheet application. Not available for external objects.
Date: Allows users to enter a date or pick a date from a popup calendar. In reports, you can limit the data by specific dates using any custom date field.
Date/Time: Allows users to enter a date or pick a date from a popup calendar and enter a time of day. They can also add the current date and time by clicking the date and time link next to the field. The time of day includes AM or PM notation. In reports, you can limit the data by specific dates and times using any custom date field.