The photojournalism style of wedding photography is very big right now (where you tell the story of the wedding in photos as if you were covering it for a newspaper or magazine). One of the cornerstone elements of this technique is to make sure to photographically capture the tiny details of the wedding, especially behind the scenes before the wedding. Here's a list of things you might want to capture (shoot), which can either stand alone in the wedding album or be used as backgrounds for other photos:
The bride's shoes
The bride's dress hanging on a hanger
The bride's tiara, necklace, etc.
The wedding invitation
The sheet music played at the wedding
The guestbook (once a few people have signed it)
Their champagne glasses
Name cards at the reception
Their wedding rings (perhaps posed on the invitation with some rose petals casually placed nearby)
The airline tickets for their honeymoon
The sheet music, or CD jewel case, to the music for their first dance
The groom's boutonniere
The bride's bouquet
Any fine detail in her dress