My Oppo DVD player has been skipping a lot lately, despite the discs being clean, so I thought it would be a good time to purchase some DVD lens cleaner. Can anyone recommend a particular brand for me? Thanks.

Any popular brand that's specifically labeled for DVD player cleaning. They all are nothing but little brushes, and actually do very little. Opening the drive and using a Qtip is the preferred method. Compressed air can also help. Be aware that none of this should be done if the player is under warranty.