We're doing Gothic in Ext. 1 as well, studying Frankenstein (Mary Shelley). Also "Invitation to A Beheading" is meant to be Gothic, my teacher mentioned it more than once though I can't remember author. Harry Potter as well, as everyone mentioned. Wuthering Heights, by Emily Bronte. Jane Eyre, Charlotte Bronte. There is, according to wikipedia, Gothic Satire (Northanger Abbey by Jane Austen as the example, among others). Just any text that you can find that has the Gothic elements - those being some or all of these:
- a castle (ruined or not)
- ruined buildings
- dungeons, underground passages, etc. Modernised, basements and attics
- labyrinths, winding stairs, dark corridors
- shadows, beam of moonlight, flickering candle, only source of light failing
- extreme landscapes and weather
- omens and ancestral curses
- magic and the supernatural
- "a passion-driven, wilful villain-hero or villain"
- heroine who needs to be a dainty typical thing - my sheet says she faints a lot and needs to be rescued heaps
- a hero whose true identity is revealed by the end of the novel
- horrific events or the threat of such occurring.
There's also the wikipedia site: heaps of examples of Gothic texts.
http://en.wikipedia.org/wiki/Gothic_fiction
Hope it helps!