Online refrigerator shopping, or measure twice, write once.
A few years ago, I did some comparison shopping online so my folks saved a few hundred dollars for the exact refrigerator model they wanted. Now Dad wants to replace Grandma's refrigerator, so my sister called a few minutes after we got in from lunch to ask me to track down the best price for a 25 ft³ side-by-side model with in-door water and ice. I brought up a few sites (Home Depot, Lowe's, Sears) and called her back for measurements and color preference. After a few minutes of running into hardly anything at the height I had heard, I called back to double check and got the correct height, enabling me to run off the store SKU and manufacturer's model number for a $700 Hotpoint side-by-side refrigerator at Home Depot and making a short list of a few slightly pricier models that fit within the measurements I have in case their local store doesn't have it in stock.
Of note: Home Depot lists dimensions and features in separate PDF files (irritating, but that's why I have several stores' sites open at once), Sears has the most user-friendly method for filtering search results, and Lowe's loads the fastest on my dialup connection.
On the bright side, shopping online is nice. I imagine the worst when I think about calling around -- I have a discernible "not from here" accent in most areas, especially east Los Angeles. Whee.