Hated Wizard of Oz, and I've never seen either, so I'll just say the second.
Anaconda or Anacondas 2: The Hunt for the Blood Orchid
OT: Dinoshark and Sharktopus are actually on my good list of syfy movies. Only ones that could be on my bad list are (even if they aren't made by syfy) are Night of the Living Dead (terrible compared to the later films and remakes) and Kill Theory. Not that I hated NOTLD, its just boring compared to its sequels, remakes and remakes of sequels.