CONTACT FORM

summary of validation / client-side v server-side
class-based validation
changing display of labels based on required fields
Checkbox Manipulation (How did you hear about us?) toggle all on/off
checkbox - show/hide
blur validation of required fields
validation of email address 
submit validation

SEARCH

label as field value, remove on blur and submit
autocomplete

SHOPPING CART
calculate totals - on change do math
input masking - on keypress do regex
edit shipping info - press 'edit' button to load shipping info form; press 'save button' to ajax submit form