When Hannah, Holly, and Lee meet for lunch, the camera zooms in on Holly right after they sit down, and begins to move in a circular motion around the table. When it passes behind Hannah, the shadow of the camera appears briefly on the back of her head.
In the record store, among the index dividers labeled with the names of jazz artists is one labeled Suburban Lawns (an L.A. New Wave band). It is out of place for the section, both by genre and alphabetically.
In the "Lucky I Ran Into You" segment, when Mickey spots Holly in the record shop, he introduces himself by saying, "I don't know if you remember me..." (obviously referencing the horrible date they had years earlier). However, Mickey and Holly had been brother- and sister-in-law for years when Mickey was married to Holly's sister, Hannah. Especially considering how close Holly and Hannah are, it's very unlikely that Mickey would have reason to believe that Holly wouldn't remember her former brother-in-law.